This is a real matter of opinion!
I have the Bravo and friends have the Wave. I trailer my Bravo to various locations and theirs is set-up once for the season and stays at the cottage. My set-up from the trailer can be complete in roughly 10 minutes - that's putting on the rudder, removing the cover from the mast (the sail is already rolled-up) and adding the bob, raising the mast and potentially adding the boom. I am not sure about set-up of the Wave, and there are lots of strategies to raise the mast quickly, but I don't think that it could be any easier to raise the mast on the Bravo.
For trailering, the Bravo is ideal. It fits nicely on a small utility trailer. The Bravo width is also street-legal but the trailer would require some small modifications to address the wider beam.
The Bravo seems more tender to me - I've flipped mine in variable winds several times while the Wave has continued sailing. There is a real reaction to hiking with the Bravo and it is quite necessary, depending upon conditions - I like it but others might not.
Speedwise, they seem close in the same winds / conditions (not sure how skipper capabilities vary!) but I would say that the Wave is a little faster from my experience.
I sail in (ideally) 15km/h winds (20km/h max) on lakes with no swell and generally very small waves. This is quite different from many people on the forums who ocean sail in heavy swells and in lots of wind. The Bravo handles it well.
The Bravo is ideal with one person; two are okay but performance (and space!) definitely suffers. The Wave seems more stable due to the wider beam and allows for more people (up to 4). My friends like to sail with one person and indicate that the Wave also slows down with more people. The wings of the Wave are potentially a nice addition.
The ability to reef the main in higher winds is fantastic on the Bravo; the Wave sail cannot be reefed. I also like the boom lifting when the sail is furled. On the flip side, the Wave offers an optional trap and a small jib which might also be fun.
I believe that the Bravo tacks better than the Wave due to the narrower beam (again, this could very much be skipper or weather related). I've not noticed any problems with the single rudder - it has never come out of the water for me as mentioned in other comments.
I stored my Bravo in my garage. For winter storage, it is bulky whereas the Wave can be taken apart easily. Ideally, I would like to be able to store the Bravo at an angle - maybe 45 degrees or potentially higher - to save valuable space. This is not recommended by Hobie in warmer temperatures as the hull might deform... I am not sure about temperatures just above freezing!?! Everything might be okay with the cooler temperatures or perhaps if the top hull was supported underneath with some type of frame / strap?????
For me, the Bravo is ideal due to the trailering and ease of set-up. If I had a more permanent set-up (cottage), I would probably opt for the Wave. Just my opinion!
Good luck with your decision!