>>10176050I don't own Prowl personally but I do have Prime. The plastic quality is fine, the problem people have with the figure is that it is a very complex and fiddly transformation with very specific clearances that can put stress on thin parts if you're not careful.
It's not something I'd recommend to someone with ham hands or someone that doesn't have the patience for crazy transformations. The robot mode is pretty great once it's together and mine has survived a good few transformations unscathed, but there are less beastly IDW primes out there. I think Generation Toy OP EX is a better one if you can find it.