As I am NOT a fan of high mass bridges in general, I went with a Wilkinson bent metal bridge, which is pretty much just a higher quality version of what was on there.
Very litte difference in tone, as the stock bridge actually sounds pretty decent.
The only reason I even did the upgrade was because I got the bridge for next to nothing, and the chrome plating was a little nicer.
I prefer a vintage Fender type tone, so high mass bridges are a step in the wrong direction for me. If felt like spending money for the sake of spending money, I'd go with the Hipshot Vintage style bride, specificly for the ease of changing strings.
Regarding tuners, I veiw that as a waste of money as the stock SX units actually function EXTREEMLY well. A little oil when they are new, and a few minutes working them in , and they're pretty smooth, and hold tune as good as anything out there.(required IMO)