Boss DR 660

Is it any good? I can get my hands on it cheaply, but don't really have enough money to waste on a non-serious purchase, so I need to know, honestly, how good it is. A couple of things to bear in mind:

1) I don't have that much money, so please don't recommend getting another with a built-in sampler or something, I can't afford it unless you've got one to sell for £100 or less.
2) It would only be used for home composing and some low-key live performance.

All this cos I can't be bothered to find a 'real' drummer (they sweat and no doubt will have endless problems lugging their kit around etc). Sigh.

Thanks for your help!