Men's vs Women's tri tops

My tri club is taking orders for tops and I probably won't get a chance to go try on the tops before the deadline (besides the fact I'm going to guestimate how much weight I'll have lost by this summer and buy a tad smaller than I am now) so I wanted some opinions from any other Athenas.  I'm a large (okay downright fat) girl, just getting into tris mostly to lose weight and my worst area of my body is my upper arms (at least that's what I think).  The fat there is quite concentrated on the inside of my arms. 

Anyway, I was wondering if I'm bound to have less chaffing with the men's style sleeveless tri top than with the women's style (the more tank-top cut)?  I'm not worried so much about women's overall cut since I'm not that endowed or curvy.  I tend to fit just as well in men's clothes overall.  I'll probably have to body glide up regardless.

Any thoughts or experiences?  Thanks in advance.