Does anybody know the difference between these two models?
I need to replace my stock battery because my stereo needs a gell battery that can hold charge and get charged quickly

Where could i find one for a good price?

 

check their website for detailed info on each model #..
all I know is you need the yellow top to run a system.

red is great for performance cars and high cranking amps, but the yellow top is more suited for audio systems.
http://www.optimabatteries.com/main.htm

 

One has side terminals, the other does not.

 

on optima's website, the only difference seems to be that one has top mount posts and the other has side mounts

Anyone know where i can find it at a good price?

 

If you were on the website, why didn't you do a search for dealers?? It would have told you where the closest one was.