You missed out Sieg mills sold by Axminster and ARC Eurotrade, etc probably as many if not more of those sold than Warco.
I've had one of their X3 machines since 2007 and very happy with it. used it straight out of the crate with no rebuilding and in that time it has just needed two £5 drive belts and one £2 neon light. All the models
here made with it except first two early ones. It's not imported now but if replacing would probably opt for the SX3 which is similar size but brushless motor. or possibly the SX3.5 both with R8 spindle
Also got the slightly smaller SX2.7 which is not a bad machine, don't use it quite so much as I have not fitted a DRO to that one.
Also happy with the Sieg KX-3 CNC that I use but outside what you are looking for.
As with all these bench top mills treat them with respect and don't try to take commercial size cuts with them and they perform and last well. Of the three makes you list I would put Warco tops. But if including Sieg machines then ARC on top.