If storage, your lake, and your budget will allow for it, A22 all the way. If not, the A20 is a great boat, was able to wakeboard behind an a20 immediately after an A22, both equally weighted with about 3800 lbs in them, and the wake is excellent.
Go do a demo, try to take with you the amount of people that you will normally take in the boat with you, demo the A20 and A22 with the group and it will help you decide about which size will work for you.
The A20 is lighter, easier to trailer and store, better on gas, and the 335 with the Acme 1235 will be plenty for whatever you throw at it. It has a little bit steeper wake, barely, and it is a little bit wider as well (rode 77.5' where I normally ride 80' in my A22 at the same speed and the wakes felt like the same width. I think it is because the tow point/tower is 2' farther back on the A20.)
A22 rides smoother in rougher water, is 2 feet longer in the cab (same swimpad length and bow lengths), more storage, will feel less cramped as you add people, and the wake is has a little longer transition. The 335 with the 1235 is enough for %95 of us, some people will need the bigger motor with that prop, or have to prop up even more, but you are talking about using the wedge plus 4000+ lbs and a full crew.
_________________ John 2011 A22
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