[balinor]

I mean we typically pay Qualiteam or another firm to perform any major upgrades as they are a real PITA. The version of X-Cart we install for our clients is highly customized, and we don't begin working with a new release until we feel it is stable - so for 4.1 that was version 4.1.8. Our philosophy is 'if it ain't broke, don't fix it' so we typically don't upgrade a stable release (like the current 4.1.12 release) unless there is a fix/improvement that benefits the client specifically.

4.1.12 will have some improvements over your 4.1.8 version, but whether or not you upgrade is up to you. As long as you are continually installing the security patches when they come out, 4.1.8 is perfectly fine.