I use the Tusk handguards on mine. They were pretty cheap, and held up very well in a big impact that broke a rib. I never used any other brand though, so take that for what it's worth. I never understood the frame guard thing, but I've been riding bikes since '73, so I guess I'm old school. Yeah, my boots wear the paint off the bike in spots, but that same action keeps the rust from forming too, so I guess there must be some other reason for them besides making somebody some money. I'm not real sure what a casesaver is, my sportbikes had aftermarket shields that followed the side cases pretty closely to keep them from grinding through in a crash, but they limited cornering clearance a little. The only thing I've seen similar was a water pump cover that bolted onto the water pump. I thought that was pretty stupid. Seems like you're increasing the likelihood of WP contact by making the area bigger. I'd rather have a shield that spans across the WP but doesn't touch it. If you mean a skid plate for underneath, Utah sport cycle makes a good one, I've heard they make it for the big names too, and they just put their name on it and charge more.
Mike.