There've been numerous discussions on the Intelli vs Intellitouch tuner issue on various guitar weenie forums and the general consensus is that one works as well as the other. The main difference is that Intelli is cheap and has no warranty, whereas Intellitouch is more expensive but has a great warranty. If your Intellitouch ever breaks, just send it back to 'em and they'll either fix it or replace it, no questions asked. If your Intelli breaks, toss it in the trash and go buy another one.

Personally, I would never buy an Intelli tuner because I think their decision to market their tuners under a name so similar to that of the leading company selling the same type product is unethical. It may not technically violate trademark laws, but it's plainly an attempt to pin their product onto the coattails of someone else's success. It's like an automoble manufacturer calling itself "Toyola".