What is the difference between these 2 shocks?

[Traxxas_Junkee]

hey rob, i was looking at the power strokes, and i was thinking about getting them, i dont plan on racing this truck, just bashing, im going to be on the road and off road do u think they will be ok for that? cuz if there is something out there that is reliable for just bashing ill get that instead of spending more money (egven though its only like 10-20 more, im REALLY CHEAP lol) i was also looking at these what do u think? http://www2.towerhobbies.com/cgi-bin/wti...XVV08&P=ML

i just noticed that these r the same price as the powerstrokes, what would u guys reccomend for bashing? and also what wait oil r u running in the powerstrokes, rob and i think uemaxx, has them not sure.