I've opened a tin of worms now.

I don't think they're bad ESC's, I meant it relevant to my situation in that I only build drill powered plywood creations. There isn't really much point in me buying expensive ESC's when they're potential will never be realised in one of my robots. By comparison of Victor 883's and so on yes they are a good deal when the current handling etc. is taken into consideration.

With regards to price I thought the Botbitz's were more expensive than £84 in the long run as they needed re-programming? Have also been reading about people's woes with them in the build diaries with certain mixers and receivers?

I should have explained that I'm looking for a couple of plastic box type ESC's with a decent mixer and that I'd rather use something other than the Botbitz's. This is due to the problems people have mentioned when mixing with some receivers since the equipment they were using to mix was a model I was about to buy.