Zuki... How about taking a lesson away from this?
DON'T BUY ANYTHING UNHEARD... Period.
Spend a whole day on it in a store, or don't buy it at all. Don't buy it unless you absolutely HAVE to buy it (because it sounds SO good)! Don't buy it because someone ELSE likes it. He ain't you!
And don't sell whatever you have gigged on for a while until AFTER you have bought and modified your new one and it does the job you want to your own satisfaction.
Have you considered what lugging a 45 lb. keyboard around on your schedule is going to take..? The weight is no joke. It's a young man's game (or get a partner!). There are times even I curse the damn thing..! But then I turn it on... and it returns the favor