What's your budget?
Here's a quick breakdown on my personal experience. Keep in mind my experience is with Subarus, Miatas and 240s.
Raceland - Local to me in SLC, UT. Hands down the worst coilover I've ridden on. Inconsistent valving so all 4 feel different. Most blow their seals in 1-3 years. They'll be seized after your first winter.
Godspeed - Better than Raceland but the valving is also super inconsistent.
BC - They were terrible about 8 years ago but they've really stepped up their quality in the last few years. Pre-load is set correctly from the box so all you need to do is set height. Ride quality is firm but not sharp (think THUD rather than PING). Decent for your weekend warrior who wants to lower their car a bit.
ISC - Literally the same thing as BC. They used to be made in the same factory, but idk if that has recently changed with the newly improved quality.
ST - KW's low end line. They're fine. KW is a fan boy brand that is over hyped. I personally wouldn't buy them. For the price you're a few hundred away from a set of Ohlins.
Megan Racing - Lesser quality than BC and ISC but generally the same thing. Expect them to seize quickly.
Bilstein - Second most comfortable coilover I've ridden on. They make a bunch of OEM struts so you can trust their quality. The B14 PSS for our car is a decent coilover for the buck. Hard part is their almost always out of stock and it takes months to get the coilovers.