New boat decision help needed

Here are my options (not in any order);
1) 2007 Epic 23V - $36,900 - 100hrs
2) 2007 Centurion Avalanche C4 - $38,990 - 161hrs
3) 2008 Centurion Avalanche C4 - $37,000 - 146hrs
4) 2007 Centurion Elite C4 - $35,550 - 34hrs
5) 2006 Centurion 230 ENZO - $39,900 - ?hrs
6) 2007 Centurion C4 Elite Air Warrior - $38,850 - 189hrs
7) 2008 Malibu V Ride - $23,600 - 99hrs
8) 2007 Centurion Elite V C4 Air Warrior - $30,000 - 142hrs
9) 2006 Centurion ENZO SV 230 - $38,990 - 55hrs
10) 2006 Supra Launch 21V - $38,900 - 253hrs
11) 2007 Centurion Air Warrior - $34,800 - 174hrs
12) 2007 Centurion ENZO 216/220 - $37,999 - 282hrs
13) 2007 Centurion Avalanche - $37,900 - 200hrs
14) 2007 Centurion Elite C4 Air Warrior - $34,900 - 156hrs
15) 2005 Centurion ENZO SV230 - $35,500 - 110hrs
16) 2007 Centurion ENZO 230 - $43,000 - 165hrs

Boat will be used for family riding mostly wake surfing and a little wake boarding.
A couple of comparison questions for each:
1) who will throw the better surf wake with 2 to 5 stowaways + captain?
2) who has the lower engine noise?
3) is the dual rudder really a good option for the Epic, and if so why not dual rudders on all of these boats?
4) how is maintenance/parts for each of these boats (by Denver, Co)?
5) engine size, some are 315hp and others are 330hp. any thoughts on one or the other? all boats are 21 to 23 feet.
6) gas usage between the 315hp and the 330hp for surfing with a 4 man crew?
7) any know issues with any of these boats (good or bad)?
Any other questions I need to be asking?

Currently I am leaning toward #1, #3, #8, #12, #16 or #17
While it may not look like it by my list above, I am not set on a Centurion. They just seem to be the most with the options I want.
Any other comments or suggestions are greatly appreciated as the wife gave me the go ahead yesterday to buy the new family addition.