Ton of great replies so far.. Thank you... My new grub screws get here tomorrow.. My Strat is set up perfectly in that I do not have any issues with my grub screws doing double duty as a palm grater. However that means I adjusted the G string saddle too high and the screw came out.. I stripped it trying to get it back in the saddle again (not the threads, the hex). I ordered a few 3/8th in grub screws for that saddle (swapping them all for stainless steel ones) since being that close to the end of the threads was probably what caused my weird harmonics.. Too much vibration under the saddle by a grub screw not completely seated. My basic summary so far which is from my own research and backed up by everyone here, so far, is:
Bent steel..
I love them.. From what I read, heard.. the Highwoods have a little effect on tone, probably because they are notched (sizzle may be coming from harmonics of a string laying across a flat surface), you keep everything but a little of the top end sizzle is smoothed out but not gone.. something about a 2k spike being tamed. Callaham's are the hardest, and the brightest, Raw Vintage are loved by many but may be a little soft and I have not found them at the right size for my american standard, feel free to provide a link if you know of one.. 2 1/6th inch spread 10.50mm saddle.. Highwoods claim they are true vintage spec.. same hardness steel, same chrome plating directly onto the steel. I am leaning towards the HIghwoods.. have them in a cart at the moment. They just seem very trouble free and they are OEM on many fine guitars. I will not have to compromise grub screw stability for comfort on them as having a fully seated screw will never be a compromise for having part of one sticking out.
All of these seem to lose the top end sizzle to some degree
Steel Blocks..
Better tone fundamentals - more rounded bell like highs, Top end sizzle is gone so pickups and EQ have more to do if you want do dial some of that back in.
Graphtech Blocks -
Tusq - Not many people seem to use these, but those that do seem to love them. Kenny Wayne Shepherd certainly is not losing any tone with them. You get to keep even more brightness than standard steel blocks while also getting better tone fundamentals - these are on my list as they seem very durable and you get all the benefits of blocks and string savers but you also keep some of the top end you lose when you stray from bent steel, though you still lose the sizzle.
String Savers - the all grey ones made completely out of the graphtech material - People love them or hate them.. def change to tone however, if you break strings a lot they are great but at the loss of strat character. They get the "who threw the blanket on my tone" comments a lot.
String saver classics - Steel block with graphtech material only in string groove - I have not seen a lot of people comment on these but when I do they get lumped in with the other graphtech string savers so there may be some bias in these reviews. These are the most expensive at over 80 dollars.