Thanks Donny, you are always there !

Went to GC and bought 2 items and will decide which one to keep:

1) It turns out there are DECENT sounding 61 keynd that is lightweight (12 lbs and under) nowadays. I am not a beginner and have owned the TOTL arrangers before. Currently owned PSR 3000 but Yamaha PSR-E313 is only like 10 lbs and the sound is decent. The rythms are fine as well. After amplification, it is very decent and usable. Too bad it does not have registrations. I might try other models in the same price range ($200 and under) like the CTK900 by Casio but I know the rythms are probably not very good compared to Yammy.

2) This option uses a midi controller and I bought the M-Audio Oxygen 49 keybd and will try to use the laptop as a sound source and rythms such as OMB software. I think this sound way too complicated. We'll see

Any ideas on this subject is most welcome