I am new to diving and want a starter suit. I typicaly dive in warmer water, but also do't get cold easily. I am 5'2 and 200 lbs. What size do Iget? Will a mans suit e a better fit?
I think your best bet is to try to get a women's suit with the correct bust, waist and hip dimensions and roll up the sleeves and legs which will probably be way too long (or even cut them shorter and get a seamstress to re-bind the edges). The shoulders will probably still be too big. If your dimensions are larger than for the 2XL, then you probably need a custom-made suit.
I think a man's suit would be a poor fit even for a larger dimensioned woman. A man's suit will have much larger shoulders and much smaller hips and won't have the extra room in the front for a woman's bust.
I can't really give advice from personal experience because I'm a pretty typical size 4, although a bit shorter at 5'3", so my XS suit fit well except that I rolled up the sleeves a bit.
Get a womens in your normal size, it will be a little long but it will just bunch up on your legs a bit. Best to go try a couple on then order online.
If you buy a mens you will have alot of unwanted airspace.
I really can't help you with a proper size and comfortable fit. However, I bought 3 NeoSport suits for me and my family. We are all very happy with the purchase.
I love my NeoSport 3/2 jumpsuit. I have worn it many times in the Caribbean and it has been the perfect thickness. I am 5'3 and 160lbs and purchased a size 12 and it fit great.