For years I've been frustrated that I can't intonate my guitars satisfactorily. I've tried all kinds of tuners and none seem to have the stability or accuracy to do the job properly. This one is by far the most expensive I've considered but out of desperation I took the plunge and hey presto, it works! I've now set up three electrics - Fender USA Strat with trem, Fender Tele and Gibson Les Paul. All set up perfectly and years of frustration washed away in minutes - it's very quick and easy to use right out of the box. The online interface takes a bit of getting used to and I haven't tried (or needed) to create any custom tunings as I've found the inbuilt collection is all and far more than I need; almost every instrument is catered for. This is a well engineered product and looks like it is made to last. I particularly like the inbuilt rechargeable but replaceable battery. So, is it worth the price? ABSOLUTELY YES in my opinion!