I have a Kayline, i love it for the summer, take the top off in literally seconds, and it's never leaked on me (and i don't even have the back tailgate strapped down).
I did the "roger brown" mod on the sides so they bolt in the factory locations, makes it quick and easy.
Doesnt' offer much security tho, and when it started getting cold, i put a hole throught the rear window... gotta get that fixed this year...

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim