I fish southeastern reservoirs and have caught more bass burning a Shad Rap RS-5 (plastic w/rattles) over deep week beds than any other Rapala.  The jointed RS-5's work just as well.  Balsa versions of the Shad Raps work great too but are too light for me to cast on baitcasting gear.  Anything in the DT series is a good bet but I use mostly DT-10's and 16's for deeper water.  Best new Rapala?  the DT Thug has a lot of thump and gets bit regularly.  But I hate those Sure Set trebles and change them out.  What works best for you will depend on where and how deep you fish.  Personally, I've never caught a fish on an X-rap after hours of fishing them.  Maybe they work great in northern waters?  Maybe it's just me!

Husky jerk

shad rap

fat rap