I'm looking for a ops core for my big melon and decided on the DragonRedAirsoft one. Can someone confirm the site is reliable, because I can find little information about it and some of it is bad (but dated 2008.http://www.airsoftforum.com/board/Dragonred-Airsoft-t97508.html )? Also can someone comment on the difference between the basic and premium version? If you have seen both in person.