Many thanks for your input guys. I had a look through Eddycurrent's build log, and the only mention I found of his was a DIYCNC one - but it was a hugely long thread and I could easily have missed what you had in mind!

Agreed on the el-cheapo BoB though - I feel something more sophisticated will be required in the future, but whilst I'm learning and commissioning what is a largely unknown bit of kit, I just want something that will do the basics without getting in the way as well as insulating my PC from the worst of what could go wrong.

I guess my current favourites are the BoBs from DIYCNC and CNC4YOU. The first are designed and made in the UK, but I read some negative comments from John S on these in one thread on this site. The second look like Far Eastern in origin, and certainly the downloadable manuals appear to support that theory, but if people are using these successfully than they could be just what I am looking for.

Any more opinions?

Cheers
Graeme