You will find happy owners and sad owners of almost every brand. Any trailer can be junk in a few years if you don't maintain it, and any trailer can stay in good shape for a long time if you DO maintain it.
There are lots of people on this site who have had horrible experiences with Camping World.
Almost all manufacturers use the same few brands of components for things like AC, water pumps, furnaces, converters, refrigerators and cooktops.
If your tow limit is 7700 lb, start looking at about 80% (or lower) of for your GROSS WEIGHT of the trailer. No vehicle performs well when pushed to its limits. Then consider that about 12% of the trailer weight will be on the tongue, and that becomes part of the cargo of the tow vehicle. Add in the hitch, people, dog, and stuff that's in the tow vehicle, and make sure you are not over the cargo capacity of the tow vehicle.
I would urge you to find 2-3 dealers within a reasonable drive from your home and start looking at the brands they have. If there is ever warranty work to be done, you will need a good dealer. Then look online at those brands and search for a floor plan that you think you would like.
My personal preference is for a front bed/rear bath/mid kitchen, but each to his/her own. A bedroom with a divider wall and door that closes is nice if you don't keep the same hours as your travel companion.
Land Rovers don't have a super long wheel base so you will likely need some sway control and weight distribution from your hitch, so consider that in the price of the trailer.
