What rides better?  What has a longer life.  Looking at Rubicon Express 2 inch lift.  Whats the good,bad,ugly?  Thanks  

Also I was looking at Edlebrock's IAS Shocks.  Now I know there is no lift to them, but to they ride smooth.  Jp has put them on a few Grands.  

twin tubes are cheaper and can ride well when valved propperly.   monos are better and will last. for a jeep with a budget boost,  look at doetsch-shocks.com  dt8000s  ride very well.  alot of guys swear by Old man emu shocks.  

I just installed that exact lift on my wrangler:

http://www.jeepz.com/forum/suspension/21895-lift-your-tj-installing-rubicon-express-2-coil-spacer-kit.html

As to twin versus mono:

Twin tubes will give you a better on road ride and are cheaper

Mono tubes will ride harsher and last longer.  They are more suited to a trail rig.  

I'd pony up for properly valved mono-tubes. They are better shocks, will last longer, and will provide a more consistent ride (no fade).

I think some of you are mistaken. The ride depends on the valving, not the basic design of the shock. A mono-tube shock is a higher-end shock. Twin-tubes are not as consistent but are less expensive.