Overall I heard Function Form's are the best. And one of the cheapest. Around 550$
At the moment I am using oem struts on my 97 ls. With skunk 2 coilovers (springs and sleeves) Godspeed Camber Kit&LCA's and yes it rides very nice. I know i have a few months till my shocks go out. By that time I will just get some F&F's.
If you're on a budget then any name brand springs and sleeves (Tein,Eibach,Megan,Skunk2) and install with your oem struts. Looking at $100-$200 for parts
Installation shouldn't be much either.