Rundown on DeepGroove1's "turnkey" CNC Taig mill
The G540 is a G540 and the Taig is a Taig. So it'll perform as a Taig and G540 would be expected to, which is quite well. The power supply voltage is less than it could be and IMHO the enclosure it's in is not very practical.
At this time I don't see the point, when you could buy a CNC ready mill from Carter Tools, get a G540, and a 48v switching supply from eBay. All it takes is a fair amount of soldering and wire splicing and a box.
He's very clear he does not support his equipment. He provides little more than a post-it note on putting on the steppers so you're going to have to research on your own how to identify, assemble, and adjust the mill yourself. Mine was not adjusted when sent anyways. Which is not really a big deal, there's this site and webpages showing how to assemble and adjust and you need to learn this anyways, except he's representing it as "turnkey" ready-to-run, not like these other sellers, when it's no different. He does not provide a phone number and is not big on answering emails, and does not even say when to expect shipment.
The problem I had was he sent me the DG1 controller- which is absolute junk. It puts out an amp, max, which isn't right for his 2.8A steppers. More of a problem is there are defects at the core of its microstepping (many of the steps won't actually exist due to the way the controller worked and it actually worsens phase lag and unresolvable stalling problems). There is zero documentation on his controller. Speaking with him, he said a lot of things which indicated lack of knowledge- and a lot of total misinformation- about electronics.
He had no interest at all in exchanging the defective controller. He MADE the controller and won't take it back. He offered to sell me a new G540, for more than it would cost to just buy a new G540 from the website.