Is the Acer Aspire Predator G7200 Defender a good gaming computer

Yes, i have had this for a few months and i think it is great, i have replaced the ATI Radeon card with 2 nvidia 8800gtx's and have added an extra 4gb of ram and now its unstoppable :) It handles all process with ease, at first i wasnt a fan of the 64 bit vista OS, but now i love it! its the best PC ive had!