I swim in a 2XU ex-hire V1. I love the suits, and tried several at the lake I swim at before choosing a favourite. the R:2 is a very buoyant and a thicker, warmer suit - if you are a weak swimmer you will love it, but if you are a strong swimmer you may prefer to go up to a V series suit, or down to a T series, which are thinner, more flexible suits. 2XU suits come in 16 sizes, so read the size chart carefully and ask them for advice if you aren't sure.
It is advised when you put wetsuits on that you start with the legs right up on your calfs, to make sure that the suit is well accommodated around groin, then move arms up over the wrist so that have plenty of stretch to accommodate the shoulders. You then pull the legs and arms back into position. If you don't put the suit - regardless of the brand - on probably then of course you will have problems getting it on/ripping it!
There are lots of ex-hires about at the moment. I got mine from B2P Sports who run wetsuit hires at several lakes: they are well worth a look.