Lance and Arctic Fox are probably the two biggest brands out there right now but there are many others and biggest isn't necessarily best. Both make nice campers (I've had both) but due diligence is important when shopping used for any brand as different years have known potential problems for different issues. Also are you looking for side or rear door, wet or dry bath, basement, storage, mid bath or rear, etc., some of these decisions will direct you to what models you should be looking at.
Best of Luck with your "Downgrade" lol,
Sticky
I think Randy Travis said it best - "I'm going back to a better class of losers"