It totally depends on your expectation and what you want it for. Don't get me wrong, I haven't used one but in my experience if it's just for making a guitar sound that you can hear in headphones, go for it; if you want something that actually has some tone to it and is fun to play, you might find going down the digital route more rewarding for the sound levels you are after. I use a Yamaha THR10 for headphone practice and, although it's still digital, it makes for a much more enjoyable practice tone at low levels/ headphone level.