OP
Hmm, so lets review - I sell both (as well as Zen) and have been playing with them;
Olympus E-PL1 Housing + Zen WA-100 dome = $1100, plus gears + spare orings, etc.
Not a bad housing, but not up to the standards of the PT-E06 either. Lightweight. Only 135' depth rating, plastic construction that's not all that robust, but should be quite serviceable. Single o-ring, voluminous construction due to inclusion of VF-2 viewfinder, which is pretty near worthless underwater (has less pixel density than the view screen). Controls are ok, well labeled, ranked in height. Zoom control is poor for use with gloves - indented into the side of the housing too far, IMHO. Gearing not all that smooth, but ok. Not all controls accessible - ie you have to remember to open the flash before loading - no way to pop it later if you forget. Port is removable, but so far only one on market. No support for 17mm, Panny 45 macro, etc. Macro port adapter a little less than robust, if not clipped in perfectly it can fall off. Fiber optic sync only. One year international warranty.
Zen Dome looks to be very high quality glass and optics. I haven't shot with it yet.
10Bar EPl-1 $1069 (fob Seattle). Includes 17mm pancake port & 14-42/9-18 semi dome port + 14-42 gears (9-18 gears coming $85). Includes spare orings, spare control tips, cleaning kit, carrying bag, etc.
Very rugged aluminum construction, working depth up to 200', tested to 300'. Aluminum screw thread ports. Decent build quality, but Chinese construction (much improved over earlier housings). Dual oring construction throughout (housing back, ports and controls). Metal controls, 2 ranked (menu & ok buttons). ALL controls are supported - you can bring the flash up and down. Zoom control is a push in and turn method, a little less than easy to get used to. Both manual focus and zoom supported. Supports lenses from both Olympus and Panasonic. Macro lens support with extension tube, no manual focus. 67mm macro screw thread on 17mm port and 14-42 flat port. Small, but negative in water by about 2# or so. Fiber optic or electrical Nikonos strobe connections. 2 year warranty, but out of HK, although I handle bad-out-of-box, and you are provided with control parts, etc.
Semi dome is good quality, but plastic. Probably not as good of corner sharpness and optics as the Zen, but the shots I took with the lens at 9mm turned out fine.
I think there's good and bad points for both, and I've had customers who liked either for various reasons. I do have all of this on display at my Tacoma location.
Jack
Olympus E-PL1 Housing + Zen WA-100 dome = $1100, plus gears + spare orings, etc.
Not a bad housing, but not up to the standards of the PT-E06 either. Lightweight. Only 135' depth rating, plastic construction that's not all that robust, but should be quite serviceable. Single o-ring, voluminous construction due to inclusion of VF-2 viewfinder, which is pretty near worthless underwater (has less pixel density than the view screen). Controls are ok, well labeled, ranked in height. Zoom control is poor for use with gloves - indented into the side of the housing too far, IMHO. Gearing not all that smooth, but ok. Not all controls accessible - ie you have to remember to open the flash before loading - no way to pop it later if you forget. Port is removable, but so far only one on market. No support for 17mm, Panny 45 macro, etc. Macro port adapter a little less than robust, if not clipped in perfectly it can fall off. Fiber optic sync only. One year international warranty.
Zen Dome looks to be very high quality glass and optics. I haven't shot with it yet.
10Bar EPl-1 $1069 (fob Seattle). Includes 17mm pancake port & 14-42/9-18 semi dome port + 14-42 gears (9-18 gears coming $85). Includes spare orings, spare control tips, cleaning kit, carrying bag, etc.
Very rugged aluminum construction, working depth up to 200', tested to 300'. Aluminum screw thread ports. Decent build quality, but Chinese construction (much improved over earlier housings). Dual oring construction throughout (housing back, ports and controls). Metal controls, 2 ranked (menu & ok buttons). ALL controls are supported - you can bring the flash up and down. Zoom control is a push in and turn method, a little less than easy to get used to. Both manual focus and zoom supported. Supports lenses from both Olympus and Panasonic. Macro lens support with extension tube, no manual focus. 67mm macro screw thread on 17mm port and 14-42 flat port. Small, but negative in water by about 2# or so. Fiber optic or electrical Nikonos strobe connections. 2 year warranty, but out of HK, although I handle bad-out-of-box, and you are provided with control parts, etc.
Semi dome is good quality, but plastic. Probably not as good of corner sharpness and optics as the Zen, but the shots I took with the lens at 9mm turned out fine.
I think there's good and bad points for both, and I've had customers who liked either for various reasons. I do have all of this on display at my Tacoma location.
Jack
video on using the E-PL1. 
