I've had a bunch of them, several that I like. It's been a bit of a rabbit hole for me.
I've had my best comfort with hammocks between 10 and 11 ft in length, gathered end, and a moderately stout material, like a Hexon 1.6 or a 70d nylon. Always have a fixed ridgeline at about 80% of the overall hammock length. Easiest suspension has been a polyester strap and cinch buckles. Being a gram weenie I use titanium buckles from Dutchware. I've done all sorts of things with bug nets, but prefer a zippered integrated bug net. Sometimes I'll use a hammock without a bugnet and just use a headnet. I like a down top quilt with a sewn footbox. For an underquilt, I like a down 3/4 quilt. I've found no value in the full length underquilt and the 3/4 saves some ounces. I've also found that I like attaching the underquilt to some d-loops sewn in at the right connection points on the hammock, with a bit of shock cord to attach it. Then I know it's a perfect fit and I don't have to mess with a bunch of adjustments. I have a variety of tarps, usually a sil-poly or sil-nylon. Size depends on circumstances.
I think I have a half dozen different hammocks right now. They aren't overly expensive and I like that I can adapt them to whatever the situation is.
I've also had a couple of bridge hammocks. I liked them but the gathered end ones are simpler, lighter, and more comfortable.
Seems like the overall key is getting the right suspension angles for a mostly flay lay at an angle, and the right top and underquilt to be comfortable.
Hammocks aren't for everyone, but I definitely prefer them.