I find things to like about every tech level. It's really just about the specific ship.
Low-tech: I love me an Atlas Mk II. Not many ships can field two large missiles AND two large ballistics, especially for the cost. Ammo feed means a pair of mjolnirs becomes a literal thunderstorm. It's slow, both in combat and out, but it will WRECK YOUR S*$&.
Midline: Gotta hand it to the Gryphon. So many missiles, so little time. Set it in the backline, fire and forget.
High-tech: I fell in love with the Sunder early on. Two gravitons and a high-intensity beam can get some INSANE range, shoot all day and the active just makes it even better. A rear guard of these means it's NEVER safe to drop shields.
There are plenty of ships I've never used, mostly because I was never forced into choosing them. Due to the way fleet size and deployment works I've mostly ended up skipping a lot of destroyers and frigates. I found the mudskipper mkII hilarious but it can't handle more than a couple shots of most large guns, making it a gimmick at best in my book.
