LG900 Laser engraver I Want to Get

The Laser engraver I am thinking of getting, in the next few months. A LG900 from Wklaser, who seem to have a decent reputation. Only thing is the damm size of it. 54" x 40" x 42" which is massive. It relies on old style water-cooled Glass CO2 tubes. They only last 1,000-2,000 hrs but are cheap at $250 minus post and vat. The newer RF metal tubs are air cooled, a lot smaller and LOT more expensive. One of the RF tubes would cost more than the complete Chinese laser + complete set of spares + CIF to door + VAT. but last 10 times as long, or so they claim.