Hi Northeastwrecks!
I just started using a Viking X-treme I bought brand new for a price you WOULD NOT BELIEVE! At DEMA a couple of years ago. I have started doing open water dives with it and have completed a total of 6 thirty to forty minute dives. I've only dove in water that was 55 to 65 degrees so I don't have any experience with it in cold water. Here is what I have learned the hard way:
1. Do not use fins that are buoyant! (I have mastered and even started to enjoy diving while completely inverted!)
2. I use Duofold Expedition Weight long johns along with sweats/polarfleece to keep me warm. Won't buy the underwear unless I find my current choices fail to keep me warm. If you choose to dive dry without the proper underwear, make sure whatever you're wearing under the suit wicks water away from your skin and can insulate when wet in case of a leak. (I managed to get soaked with 56 degree water and was still quite comfortable, the water ended up in the outer layer of polarfleece).
3. Make sure whatever you wear on your feet under the suit keeps your feet in the boots! I added an extra layer of wool socks because when I ended up inverted (most of the dive!) I would "fall out" of my boots! It's really hard to use fins when your toes, and not your heels, are by the fin straps!
4. If your drysuit "burps" the air out through the neck seal try turning the neck seal under, just a little bit. If you turn it so low it doesn't nearly touch your lower jaw it will leak along the sides of your esophagus when you move your head, swallow, etc. (that's how I ended up wet one dive).
Do I like it? Most of my 112 dives are in 40 to 55 degree water with a 1/4 inch farmer john with jacket, hood and 3-finger gloves. Right now the only plus I see to dry suit diving is being dry (hopefully
) for your surface interval and having your feet stay warm the entire dive. Until my dry suit and I come to an agreement about who is in charge during the dive I'm going wet no matter how cold! I'm sure once I have a LOT more training dives under my belt I'll like the dry suit just fine but right now it's only coming out of the closet for dry suit training dives.
Anyway, that has been my experience ;-0 There are many dry suit divers here who can give you all kinds of tips on any dry suit you may purchase. If you can afford it, do it! Don't fret if you feel like a beginning diver when you first start training with it! If nothing else it's a good exercise in stress management and gear wrestling until you and the suit decide which of you is in control!
Good luck!
Ber
(disclaimer--all information in this posting is a result of my own personal experience, individual results will vary, results not typical)