The dilemma is either Gavita Pro 6oo (e) or pay $50 more and get 750 ouble Ended. I am using Plasmas on both sides of whatever fixture I go with. I got 5x5 tent and have both 3x3 and 4x4 trays. I have about 7oo-8oo cfm being filtered on exhaust. I hear so much about DE. What reasons would I have for not getting the 750? Should this be a no brainer. It's being marketed as still being as efficient as any other 6oo when dimmed to 6oo.