The tanaka chainsaws are fine. A friend of mine has had one for about 5 years now.
Our company uses Stihl chainsaws though. They seem to be about the pick of the bunch.
I've got an old partner saw. I've had it now for about 6 years or more. Before that, I had a McCulloch (even cheaper) I've never had any problem getting bits for them. The partner is part of Electrolux group.
I guess it's all down to how much you're willing to spend on one, and how often you're going to use it.
![biggrin :D](https://chat.allotment-garden.org/Smileys/green/biggrin.gif)