I'd go (Hey!, I did!!

) Maze3:1 so you have the coldplate there for later when a 220watt TEC looks inviting

. the insulation on the TEC Swiftech is prone to breaking, the bolt(steel) freezes to the standoff(ALu) making the standoff come loose and just turn on the spot, (making a regular strip down necasary anyways) tearing the neoprene while at it. also the maze
body is much easier to insulate than the swiftech. plus I don't like mixing ALU & Cu.
PS, I heard Swiftech were planning on addressing this problem by using a non~different metal mix for fittings, ie, all steel or all ALu. I don't know when(or if really) they plan to do this though.
This is just my little or no experienced opinion though

, peeple have problems with maze 3 mountings. these can usualy be cured with stronger springs. go for a Cu top if you're not sure about how to care for Lexan

...