ramrod Just know and accept that the car will drive like a go kart with coilovers
I believe they should be for track use cars only, but I somewhat care about comfort
Completely untrue, but @Spac covered off the 'why' elements of that already.
If we are generalising though, lower-end coilovers are often over-sprung. Stiffer isnt better and I spend a lot of time talking people out of big spring rates and taking the intended application into account. We've also put together a kit, for example, to address the BC coilover kits having a completely inappropriate default rear spring rate for 2 and 7 series volvos, where you can move to an easily available, off the shelf 5" dia spring and open up some ability to fine tune spring rate.
I'd always ask why someone wants them as a starting point and then steer the conversation back what you might be hoping to achieve. Putting ride height aside, an advantage in going to a 'coilover' (macpherson struts are, by definition, a coilover as they're a coil over shock/strut arrangement) as know it, in this context, is the smaller package size (smaller OD spring) opens up greater ability for castor and camber adjustment, simply because you're able you have more space in the tower to allow you to move it around.
Beyond that, assuming you're not using a bespoke spring and you've got a common 2.25" or 2.5" spring, there's lots of spring rate options too so you're able to tune things to your liking (or application).
Decent ones will also have bump and rebound adjustment too.
Ride height adjustment, in my own opinion, is certainly not at the top of the list in terms of 'why' you might be thinking about them.
My Focus XR5 had rebuilt Heico (rebranded KW in this case) front coilovers and the rear was GAZ adjustable shocks with GAZ adjustable perches. Spring rates were firm(ish) but it rode and handled very well. I drove it to Sydney and Canberra from Geelong VIC and that was perfectly fine. I set the ride height once and never changed it. With a set of adjustable camber arms and adjustable toe arms in the rear, it wheel aligned well and was not hard on tyres.
The current V70T5 we're working on doesnt/wont have coilovers fitted. Instead it will have rebuilt Ohlins front struts and Bilstein B6 rear shocks with Eibach lowering springs all round. Ride height is lower, but not impractical. Via a set of adjustable strut mounts, I've got all of the castor/camber adjustment I'll need as well.
The previous V70T5 was nearly the same, but was fitted with H&R springs rather than Eibach. On the P80 platfrom there are nuances between them.
We've spec'd and sold quite a few GAZ-based coilover sets now with road-car like spring rates too and we will swap spring rates over with a customer for a period of time, post sale, if they wish to further fine tune ride to their liking.