New "Skin" Swimsuits—which way to go?

I've done a bit of research on the new wave of "skinsuits" swimmers are sporting, and now have come to a crossroads as to what I should do for myself...I want to cover my bases in deciding, so please bear with me... 1. A lot of manufacturers seem to say order your normal clothing waist size, when we traditionally have gone down in size in competition suits to avoid bagging and drag. So if I'm a 34, should i really order a 34, or still go 32. I'm kind of a big guy, so I don't know if I lost weight or gained muscle, whether this would stress the fabric too much, or cause looseness. Or are they made to handle this? Does anyone have circulation problems? Men specifically. 2. I've read that breastrokers tend to stay closer to the traditional brief or the kneelength jams. Does it really matter in terms of freedom of movement? Does the compression of the quad/hamstring area help a lot? If so, if we're a bit flabby up top, should we consider the sleeveless neck to knee? does it just hold things in place better? how do people find the leg tights? 3. Does anyone have any knowledge of nike, versus tyr, versus speedo, versus adidas, or arena opinions in performance? How do you feel in general about all this? I hope someone can help settle these concerns. Most of the information seems to be for skinny young elite swimmers out there. some of us masters could use a little edge as well, i know a lot of it is psychological, but it's not cheap. thanks, mister