It's also a good idea to take what you are currently using, set it up next to the new gear, and A/B them rigorously. If you have a pocket recorder, patch that in as well, then go home and listen again objectively to the recording of the two (you hear things differently when you are not playing), and decide then. I am VERY slow when it comes to gear purchases. I'd rather go back to the store two or three times (if it is local!) and get it right than have to return something (and take a restocking hit) I have purchased...