Both solidworks and solid edge don't work on macs and I can't be bothered to download a virtual pc just for cad software. Thanks for the info though, I'll bear it in mind if I buy a new laptop, I'll probably get one or the other.

I'll probably stick with DX5e Ben, it's not overly expensive and it's all I really need to be honest though we'll see, might end up going tight for cash.

Will the motors need custom gears making or can you buy pre made ones?

Thanks everyone.