Zuki: I use my T2 on gigs regularly. Weight is not a problem and it fits in my car OK. The down side for me is the lack of internal speakers. I use a personal monitor (Toa-sm25) similar to a hot spot. It works well enough for me to wait until whatever replaces the T2 instead of considering a S-900. Looking at the S-900 it has all the sounds and styles I use on a regular basis. I think the S-900 USB recording is fine instead of the T2 harddrive recording. My only concerns is the physical aspects. I really like the big clear buttons on the T2 and I find the action to be OK. I have not tried a S-900 to see how it would work in realtime. Like any keyboard I would want to try it first.