C-Beam question

Hello all, i'm new here, but been reading for a few days. i would like to get into CNC and i think for what i would like out of it the C-Beam might be the right machine. The one question i have is what kind of accuracy is achievable with this machine for purposes of milling PCBs? And if there are folks who have use this machine for this purpose what spindle do they prefer.

Off course if someone can recommend a different approach, i'm open to any and all suggestions. The main uses for me...

C-Beam question