I never really had bad luck with Wait4me, but they are the bottom of the barrel when it comes to tuning. Allen has been at it about as long as anyone and I remember back when he had LS1-Edit(now pretty much obsolete technology).

I personally haven't been able to afford a Nelson tune, and decided to send my money elsewhere, but the more I spend on this site the more I appreciate his help and knowledge.

That is coming from a pretty unbiased source, and I am more than happy with my current tuner. He's just across the country is the problem.