Gravity Droppers are v reliable and very easy to service. There is usually some play in the bushes which allows a small amount of rotational and longitudinal and lateral wiggle but although it’s noticeable when you’re off the bike it completely vanishes (for me) when riding and I’m pretty pernickety about things like that.
I’m in the process of picking a 5″ dropper post for my new bike, weighing up Reverb, Thomson, KS, etc and I’m struggling to convince myself to go for anything other than another Gravity Dropper (Turbo LP in this case). They just work! And when they stop working so well after ages and ages in foul weather they’re so simple and easily maintainable.
Do you mean non-remote? If so, get a remote! Without it you’re missing about half the benefit.