I assume you mean Rat Rig :) Their printers do look good on paper, especially from a value-for-money perspective, but I’ve heard so much negative stuff about that company that I’d be very wary of doing business with them. Usually the complaints fall into one of the categories; no quality control, no support, delays, and/or poorly printed parts (i.e. the parts of the Rat Rig printer that are 3d printed). IIRC the worst design flaws of the VCore 3 have been addressed in 3.1 by incorporating fixes by the community, but allegedly the company still denies that those problems existed in the first place. You can ofc. be lucky and have no issues at all with Rat Rig, but I would recommend asking around among people who have bought printers from them to see what their experience has been like. This is just things I’ve heard, so don’t take my word for it :)

Also if you do go for Rat Rig, you probably want to avoid the larger models they offer. The coreXY design doesn’t scale indefinitely, and when the belts get too long you might run into print quality issues, and be forced to print slower. The largest Voron Design offers is 350x350, probably for a good reason.

If you’re into DIY, Annex Engineering printers are pretty cool. Slightly more expensive than Vorons since they have 2 stepper motors per axis, but I think with the benefit that their designs scale all the way up to 500x500 build volume. Annex also focus their designs 100% on speed and quality, while Voron has stated that they are willing to sacrifice some for aesthetics, so it depends on what you value.