For those of you who are looking for an extremely accurate tuner with tons of functionality, this is it. As a string player, I cannot tell you the difference it makes using a strobe tuner for tuning and checking intonation. Over the past few years, my VSAM has become an absolute necessity in the practice room. The ability to generate accurate reference tones, meter in various temperaments, and provide a very loud metronome have made it essential. I'm so glad I've had it. That said, it's not perfect. For one, it's absolutely huge. As you've surely noticed, the tuner is housed in a large (removable) blue boot. This feature adds considerable mass. It's been so cumbersome that I've generally left it behind, to the detriment of the tuner. Without the boot, the unit is extremely fragile. I've had to send my unit in for repairs (which were very costly) on several occasions, after having had the tuner fall off a chair or bang around too harshly in a music bag. Durability for this unit is NOT very good. Especially with poor design of the large adjustment knob in the middle of the faceplate. Unless you are very delicate, this WILL probably be broken off or in some way damaged (it sticks out quite significantly from the front of the unit). The rubber selection buttons have a tendency to stick, and can become lodged inside/behind the faceplate. There is a lot of wasted space inside. I've dismantled the tuner several times, discovering that the interior is largely void. What this means is that the body is unnecessarily large. If the device were more dense and compact I am quite sure it would also be more durable (and less susceptible to damage from falls). What this tuner sorely needs is a redesign from the ground up. I suspect that Peterson has little compulsion to do this because they have no real competition in the strobe tuning sector, so this device has no rival. However, Peterson really needs to design a device that is more compact (there is no reason it needs to be larger than an iPod), more durable and more visually appealing, with the same essential features. If that were to happen, I believe the response in sales would be tremendous. I know I'd swap mine immediately! Until then, hesitantly recommended and hoping for improvement.