I am guessing you are a visitor here in the US, not a resident, and that does making picking one out a little trickier, notwithstanding the amount of information you can get from the Internet.
I am very pleased with my new Thor Tuscany, and had a great Fleetwood Expedition that was traded in.
I have no personal knowledge of MHSRV, and certainly there are a few other large lots in the US, and some here have had good experience with PPL in Houston, Texas, but I think they are primarily a consignment group, but others will correct me.
You just have to kiss a lot of frogs, probably in person, and if you have time constraints, you need to find a dealer with a pretty large inventory. Take your time, though, because it is always a buyer's market. There are some bargains out there if you do the homework.
Good luck and take a look through the Forum at the experience of others who have come across the pond to purchase their rigs.