Depending on if you prefer a firmer ride or a softer ride. Those who prefer a firmer ride tend to like KYB and those who prefer a softer ride can look at Monroe OESpectrum struts/shocks or QuickStruts assemblies, which I personally prefer. So it depends.
Look up your applications on manufacturers' catalogs first:
Find the right shock, strut, or assembly. Select your year, make and model, or search by V.I.N., License Plate or by KYB Part Number.
Then look on rockauto or other online sellers for best prices. Using RWD 4-cyl as an example, on rockauto you can find Suspension Kits containing all four corners. The fronts are complete front assemblies with mounts, bellows and coil springs; the rears are plain shock absorbers.
There are limited selections of Bilsteins on rockauto. Other sellers may offer more choices if you prefer Bilsteins. KYB is jokingly called "K"eep "Y"our "B"ilsteins.
Monroe's 4 corners kit is $262.99, KYB RWD $283.79 and KYB 4WD $291.79. KYB is more specific as far as offering different front coils for RWD and 4WD (4WD coils are 0.57" taller, with the same 595 lb/in spring rate). Monroe coils are one fits both.
RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Easy to use parts catalog.
However you can buy plain struts and shock absorbers. Monroe would be $183.36 for all four corners. KYB would be $213.56. You should at least inspect all the rubber parts for wear if you assemble your own.
And use the rockauto 5% off code if you buy from there, scroll to the newest post:
Im replacing my rear struts on an 07 fwd 4banger. I want to keep the factory springs because Ive heard quickstrut replacements often leave your car riding higher or lower. So IM going to replace just the shocks, or struts I guess in this case. I have torn dust boot so I'll buy those but what...
One on Corolla struts, but look at the different brands and price points:
I have been down this path before, but figured I'd see if this has changed but has anyone found any quick strut that is solid besides KYB $400 for 4 corners. Usually, the offbrand assemblies result in a really weird lift, or last less then a year....