The Berserker rashguards are constructed from a high stretch polyester with fully sublimated graphics, certain never to peel or crack.$19
Meerkatsu review at http://meerkat69.blogspot.dk/2012/12/review-odin-fightwear-rashguard-and.html
Sounds like it's neither awful nor special.
Size chart? I'm 145pounds, 5'2" and 39" chest
These are true to fit, so I'd say go with whatever size rashguard you normally wear.
BJJ Legends review http://www.bjjlegends.com/bjj/jiujitsu/item/1077-gear-review-bersurker-rashguard-muninn-fight-shorts