I like the xB,Soul,Cube class of cars. They're efficient, have tons of space, and cheap. Not to mention most come loaded with features out of the box. Its a pretty sweet car for young adults hauling things around. Plus since they're smaller cars it makes getting through the city/parking less of a hassle than driving an SUV.
The sporty SUVs are cool too. I dont mind having a badass balls to the wall SUV that made for pure performance. My issue is when every manufacturer goes and does the same thing as the first guy who did it. There isn't much of a high powered SUV market out there, so one or two companies doing it is fine, but when all of them do its overkill.
I guess the oversaturation done by all companies is what kills a lot of niche cars and while its not so much of a trend as much as it is just doing business, it needs to stop. The X6 is a perfect example, one company makes a niche car with relative success, a few others try to. If you're company can't make a better product then what you're trying to compete with in a niche market, don't make it. Thankfully the car companies were smart enough to not try to copy Nissan with the Murano droptop.