They don't even exist.Small, quality routers (at an affordable hobbyist price - i.e. under US$2K) seem hard to find....
Ideally, you'd want a 24x36 size machine, and any good quality machine in that size will cost at least $4K-$5K. The only cheap option is to build.
You rarely see anyone posting here who's purchased a machine like that. I think the main reason is cost.