https://cf.geekdo-images.com/images/pic3067316_md.jpg
Risk Star Trek
https://cf.geekdo-images.com/images/pic2964559.jpg
Star Trek Ascendancy (small, but there are lots of them)
https://cf.geekdo-images.com/images/pic3000154_md.jpg
Star Trek Frontiers (larger, but only these four and four Borg cubes)
https://cf.geekdo-images.com/images/pic3113447_md.jpg
Star Trek Panic (just the cardboard)
Frankly, I don't think any of them have high quality components, although the cardboard Enterprise from Panic is really cool looking, especially as it takes damage. Otherwise, I would give my recommendations based on gameplay. If you are looking for a 4X game in which you compete against the Klingons and Romulans, go for Ascendancy. If you want more exploration, and are accustomed to long, advanced games, go for Frontiers. If you want a cooperative game that has the fun of TOS, go for Panic. If you don't have a lot of money, you can print out and assemble Star Trek: The Dice Game (free pnp).
If you like Risk, Risk Europe is supposed too be good.