Re: ZX45 or G0762?
People do wish for more spindle speed, but given what you're talking about I would go for the RF45 and the larger ones at that. You can always go for a belt drive later on. Some of the clones don't have much more Y than the 0704 and that is the limit that frustrated me the most. I'm upgrading myself to add a few more Y Inches. Sadly I'ts not going to be a RF45 but really, my work is in robotics and generally small AL parts so the BF25/30 sized machines are great for what I do.
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.