Personally, I think it's a better deal to go w/ Real St. I got a rod/piston package from them and have been very happy. It comes out to be $900 before tax/S&H for Manley/Wiseco FYI.
here
My build thread
I'm running Manley H-beam rods and Wiseco pistons (.020" overbore) making 412hp off of 93 pump gas alone. If I would have been content with 400 whp I may have just had my stock rods peened. My machinist has done a few KA-T blocks and has seen 400 Whp fairly reliably out of the stock rods but that's the upper ceiling. I will be converting to E85 and chasing 500+ down the road but I'm very happy with it for now. The Manley rods are pretty light for an H-beam too. Weight plays a big part here in your rotating assembly as far as how the engine is going to 'feel'.
Can't speak for the scat rods but I know of a lot of people who are happy with their Eagle rods.
As for my main/rod bearings, I called Calico and had them coat a set of ACL rod bearings and Clevite-77 main bearings. I wanted to run full ACL but their rep at ACL was telling them the main bearings for the KA were "back-ordered indefinitely" I'm happy with the end result either way.