Stick with what you have for now T4 or S970 is more then enough to gig with, 10 jobs a month isn't alot at all,...technology will change faster then you can blink and eye, these kb's are just tools to enhance whatever talent you have inside you,...just wait and see what comes out next and if it fits your needs or not you can decide then,..what's the rush you have the rest of your life to buy gear...
or try something totally different like the vArranger with a Laptop and controller KB this way Dan is always upgrading it and you'll have an arranger to gig with for years to come..or give a shot to KORG pa4x, Pa900, KETRON Audya or SD7, Roland BK9, there isn't that much left to choose from these days in an arranger KB





have fun