Replying to Custom Footbed question

Ive never had enough money to shell out for complete custom footbeds so ive stuck with superfeet ones. My question is how long do ur customs usually last u as i think they should probably be able to be switched from boot to boot and slightly adjusted probably. I love my technica icons and probably wont get new ones until they are way packed out. Ive got problems with arch support because ive got pretty large ones in my feet and i have never been close to 100% satisfied and comfortable in my boots. I also always feel like all the circulation in my feet is being cut off and when i loosen the buckles and take my feet out they get super tingly and it feels like ive got millions of needles stuck in my feet....and its always the bottom of my feet that feel this way. I dont know if its the footbeds or something else but i will probably be willing to spend some money on custom ones now if they can last me a few seasons. Any help or experiences with similar problems?