The general consensus is that a tight tramp is desirable. (Insert your own joke here...)
With the Club version, you can really snug up the laces, and they'll stay that way. With the SE version, it's hard to get that much tension on the drawstring; and you have to re-do it each time you re-assemble the boat.
Also, the velcro straps around the SE's rear crossbar can get in the way, especially if you ever decide to install a traveller. But there are ways around that issue, as can be seen in another thread on this forum.
As for sailing, Patrick Green has won the Wave Class National Championship several times sailing an SE Wave. He disassembles it and hauls it all over the country on a little custom trailer that he built, and can reassemble it race-ready in about 15 minutes. Other folks have won the class on Club Waves, so I don't think there's any real difference speed-wise.
There are trailers available for hauling the boat assembled, and it's quick and easy to launch from there. Just raise the mast, hoist the sail and go. But one regular poster on this forum said he liked the work-out of car-topping his SE Wave, carrying the pieces to the water and building the boat on the beach. He said it always got folks attention; and the more he did it, the more ripped he got.
Personally, I like my Club Wave. I don't transport it that often, maybe 2 or 3 times a year, and I made my own trailer (by simply adding cross-planks to a cheap utility trailer) that carries it assembled. Most of the time, it sits outside on the ground, summer and winter; and I've never had any problems. Cup-holders might be nice to have sometimes; but then again, they may drag in the waves when things really get cranking.