They are both GT Tuning intercoolers, the standard replacement one is best standard position one you can get, for anything up to 20spi on a T25 or smaller then it'll work fine, after that or bigger turbo i'd go for front mount but for me i'm not keen on GT Tunings one.
I tend to make all my front mount kits, buy one off ebay the size you want then make all the pipework fit whichever route you want to make it go using universal eblows and pipe.