The kit at my small church is giving up the ghost; starting to have channel failures, triggering problems, etc. Need to find a replacement but (did I say small church) only have a budget of around $500. What should I be looking for? I've seen a few listings for Roland TD4 and TD11 kits around that price. Would like mesh heads if possible (my arthritis would appreciate it). What other options? I've considered replacing the module with a Yamaha DTX502, but I'd like to replace the pads and cables too if possible.