strut warranty question..

Ok, here's what I'm looking for:
Struts with a lengthy warranty that will feel good for my ride. I do have my car lowered, but I still want a soft ride. I don't have money to buy a different coil over kit (I have the sleeves right now), so I would like to get the smoothest riding shocks for my car with the longest warranty... Any suggestions, please?

I know KYB will not offer any warranty replacements or repairs if matched with coilover sleeves. Im not sure about the others brands & their warranty issues with sleeves.

To help prolong the life of shocks do not always drive around with a huge drop & if they are adjustable shocks dont drive all the time with them on the highest settings.