IMO, most newly designed (and most older designs) performance boats have booms. Think F18s, F16s, I20s, As, Ts.... Besides the Wave, is there a current "performance" design without a boom? N5.5 and orig 6.0 were boomless.

All of the designs have changed where the sails attach directly to the mainsheet block and the boom only acts as an outhaul agent/mast rotator device.

I had a 5.5SL and the boomless rig was handy, but I think it adversely affected performance downwind in light air.

I would not consider myself an expert on the subject.