I'm using the Baikal 900 MH machines, they are good quality. I haven't had any issues with them. The only thing I wish they supported was static IP addresses, they only support DHCP. But apart from that a very good machine.
I want use Baikal for mining too.
Where can I buy this machines? (where you bought it?)
My choice use 600 MH or 4 x 300 MH.
Thanks for advice.