For me - especially with the new 1.0 client - Waves is way ahead of BTS regarding usability, stability and speed. I also find it more intuitive for newbies - lesser technical lingo means more users get attracted. Also the coin is going very well for me - see a realistic goal of 100-120US$ for Waves, which would place them into the top 10 of coins regarding market cap. So yes, I´m Team Waves ;)
(and I will of course also keep an eye on BTS when it gets more stable and practical for day to day trading)