I was looking at the KISS. I've read that they are unsafe and have many problems..... you also need to buy the parts separate.
Wow... walk away from whomever is telling you this info...
The KISS is a mccr, and for the length of time it has been on the market, has the BEST safety record around..., hands down. Until recently (last few months), it boasted a perfect safety record (and all indications are that incident was health related/not unit related)... No other unit that had been out for any significant amount of time could make that claim. Statistical anomaly or engineering? Attribute of mCCR or eCCR? I don't know, and it's an ongoing point of discussion/contenting inside the rebreather community, but the # speaks pretty highly of itself... (Off the top of my head, I think the rEvo can make this claim as well, but it's only been out a year or so - I think...)
The KISS is sold as a kit..., when you purchase it, you receive it as a box of parts, and during your class you assemble it under the watchful eyes of an instructor... Can you think of a better way to learn the ins and outs of how 'your life support' will function...? (This also eliminates allot of manufacturer liability; most rebreather manufacturers are smaller operations...)
I don't think rEvo is from America.
The rEvo is from Belgium...
Megalodon got my interest because it's from America and has great technology.
Well, lets address these separately.... because there are items to cover...
Made in USA...
When your talking about the 'commercially available to the public' rebreathers (and I'm sure I'll leave some out, but my cruz here is to ignore military 2nd, mk15's, ccr2000's, etc....)... the US is way behind historically speaking.... APD (Inspiration - UK) has been making rebreathers for over 11 years now... Draeger has the Dolphin\Ray, etc, and they've been out for some time... I'd have to go page through one of Jill's books to get the specific time line, but I want to say the Meg (US) and the KISS (Canada) were introduced roughly around a similar time frame (~1999), The Optima (US) maybe ~2005...? Hammerhead (US), 2008/2007...? I don't know the specifics of the Pelagian or weither its fair or not to include the CIS Lunar stuff given the extremely high price tag, and its certainly not 'mass market' like the other units...
Great Technology...
Read up a bit and learn how rebreathers work... After you pull away the shroud of mystery, they become quite simple in theory.... And part of the meg's ruggedness is its simplicity in some areas, and if you look feature by feature when comparing to some of the other units, some could make the claim it falls short. Most notably looking at integrating deco. (Which I actually prefer off board)
Next to ruggedness, the next best feature about the meg is modularity.... Nothing about it is one size fits all... Different 3rd party monitoring options, scrubbers, canister sizes, bottle selections, bottle mounting hardware, wing, harness, heads (mccr, eccr), DSV/FFM, etc...
-Tim