Put the S5 in today. Was a bit cheaper than i expected... it came to $146 after tax. The battery itself is a very light silver (basically white), so i kind of like how it looks in there as opposed to the generic black case.

First impressions? Well, i was able to tell with the first startup that my truck had a MUCH easier time starting. I'll have to throw my meter on it and see how much it drops when cranking... the OEM battery was going down to around 10.2, which isn't horrible... but being 4 years old and feeling it struggle to start on ocassion, there was no reason not to change it.