Thanks for the info guys. I think I'll probably go the route of just using a yellow coticle, I only have a small flat and am always getting grief for leaving stones all over the place in our small kitchen!

I've done a little experimentation using them with/without slurry and it's cool that you can change the speed the stone cuts at a little. I also like the way that it's much harder to overhone with a yellow compared to a 4K/8K, especially since I tend to use more strokes than is probably necessary.

I'll give this some thought, thanks folks.