-
Are you actually going to race it? Or is it going to do other stuff as well?
Sliding is much heavier, but easy wheel change. You will have loosen and tighten 4bolts to change gear.
Track ends are the lightest, easy enough to change wheel but slower than vertical dropouts. Also 4 bolts to change gear. Two on hub (unless QR) and two on brake caliper. Works shitty with mudguards.
ebb looks clean, but is heavy and expensive. Plus I would want bsa.
My next frame would probably be a sscx specific frame with cococino cocomoto style dropouts instead of sliding
http://2.bp.blogspot.com/-84ecVr5TpSw/VHIPUAsWlxI/AAAAAAAAQRY/Tn4x3ngFtIQ/s1600/IMG_6325.JPG
You could get it with heaths gear hanger. If canti same applies I believe. Track ends because of less weight
Thinking about it, a little late for this season though.