Help me with current best manufacturers

It all depends on your budget and your tow vehicle. If you have a half ton truck, or SUV equivalent, or mid-size truck, you’ll likely be limited to trailers under 6,000# GVWR. And limited to 26ft or less. Budget-wise, the best brands, like ORV, Northwoods, Airstream, and most larger fiberglass trailers are quite heavy, and very expensive even if purchased used. For those, you’re looking in the $60K and up range, and you’ll need a 3/4 ton truck. We shopped a long time to find a trailer that didn’t require us to get a new truck, and was of moderately good quality. For us, towability and build quality were the factors that settled us on the Winnebago Micro-Minnie line. If buying new, you can expect any trailer to have some things you’ll have to fix after you get it home. If your expectations, no matter what you paid, are that everything should work perfectly with no problems, you will be sorely disappointed. If you’re a good wrench, there will be very few things you won’t be able to fix, otherwise you’ll spend a lot of time and money at a dealership or repair shop. IMHO, the happiest campers are those who stick to their budget by buying a camper that may not be perfect (because there isn’t one), but suitable for their style of camping. Think first of whether you prefer RV parks or dry camping, and then choose and outfit your trailer to fit.