Welcome to RV.net.
Your question is really one that will require 1/2 a book to write. I don't mean for that to sound snarky, just that it is true.
There are still A LOT of questions you need to ask yourself so that you can narrow down what to look at.
New or used?
Budget?
Family size?
Tow vehicle or will you match a TV to a TT you buy?
Do you intend to stay with full hook-ups at a RV park or will you dry camp/boondock?
A really good way to look at a lot of trailers all in one location is to go to a RV show. Go there and do a pretend live-in to see if a floor plan and space fit your needs. Then you will also be able to get an idea as to options you may like along with pricing. Look very carefully at the shipped weight on those TTs to know what range a TV you should be in.
If you already own your tow vehicle, list it up as that is critical information. 1/2 ton vehicles can be very limited on what they can tow and it makes zero difference if you only are planning 40 mile trips, no water, bringing limited items, etc.
There is a lot of experience on this site and some information you may not want to hear... but heed that advice.