1st off, canít go wrong with either boat. However, I have ridden 240 several times and own an Avy. I dont think there is a better surf wake on the market than the 240. I would not want the Sideswipe or the Switchblade, but I would want at least 340hp engine. Get one with the quad ballast and all you have to do is take out the hard tanks and drop the Enzo sacs in and you are ready to surf. By the way, I have an FAE and it is great. It cuts down on the CO2 and engine noise significantly.
Also, if you want a 22ft boat take a look at the Avy. I think it has surf wake as good as any boat (other than 240). I have mine set up with 1,200lb custom Avy sacs. It throws up a great surf wake (powerful, but not quite the push as an Enzo at the back of the wave) and has a great wakeboard wake.
Check out centurioncrew.com. There are a lot of guys there that are very helpful as well.