As of this writing, I've owned my Roadie 2 for two months -- meaning that I've had plenty of time to use it many times on a number of my guitars. At this point, I can only say that it has surpassed all my expectations.When I first read about the Roadie 2, I was dubious. A tuner you can actually place over the tuning pegs of your guitar and it will tune the instrument? It sounded bizarre, but I was intrigued -- and so I ordered it.When it arrived, I took it into my home studio. After charging it, I figured I'd try it on my acoustic six-string. It was an odd feeling watching the little key device turn the pegs on my guitar. However, the guitar was perfectly in tune.I then tried it on my six-string electric -- and it worked perfectly again. After a couple of hours playing, the guitar had gone slightly out of tune. I figured I'd use my regular digital tuner clipped to my headstock. I tuned using this, then hit a chord. There was a string slightly out of tune -- which as most guitarists know is as bad as an instrument completely out of tune. But, the digital tuner showed that things were all tuned up. So, I decided to use the Roadie again. After having it adjust the tuning, I strummed a chord -- everything was perfect. I realized that when I would use my digital tuner, I'd have to do some "fine tuning" by ear afterwards. Not so with the Roadie.A month ago I received my twelve-string Danelectro electric guitar. I was eager to try out the Roadie -- especially since I really didn't have a clue as to how to tune a twelve-string. (I've played six-strings for thirty years -- this was my first twelve-string.)After the simple matter of clicking in my Roadie 2 for a twelve-string, I started my tuning. It worked great. Frankly, there's no way I would even attempt to use my digital tuner for the twelve-string.I know that one can dial in any number of open tunings on the Roadie 2 -- I haven't yet used that feature because I've not really played with open tunings in the past. But, I'm looking forward to doing so.One review I've read talked about the Roadie drastically detuning the string while tuning. This only happens if you choose the wrong string to tune vis a vis what the Roadie is set to. Yes, I've done it -- but it's been my fault. All you need to do is keep checking the screen of the Roadie to ensure that you've got the tuner on the correct string.I've read another review saying that their Roadie stopped working after a short while. I can't speak for that person, of course, but I've been using my Roadie almost every day for two months and haven't had a problem.How this works I haven't a clue. I'm not a tech person -- so to me it seems like I've invited a guitar tech into my home to take care of tuning up my equipment.I've seen that the Roadie 3 has just become available. I've placed my order, and I've been told by Band Industries that it should be arriving by the end of the week. I can't see how it can improve on the tuning experience of Roadie 2 -- but I'm looking forward to the full-color display and other goodies.I assume that this is a small company -- but I'm incredibly impressed with the communication and transparency that they've shown in the ordering and shipping process for the Roadie 3.I really don't write a lot of reviews on Amazon -- except when things are amazingly great or horribly bad. Please be assured that in this case, it's because the Roadie 2 is amazingly great.