1000 Mile Socks make a version that is wholly synthetic, and they also do one where the inner part is Tactel and the outer contains wool. Possibly a good compromise for you. I rather like them, but if you prefer a padded sock then you might find them a little thin. These socks are composed of two layers, essentially a sock within a sock, to prevent blisters and make the sock last longer.
Tilley Endurables do an extremely comfy travel sock, again a bit thin if you like padding, guaranteed not to wear out for a couple of years. Exceptional fit, but they contain polypro and so do tend to whiff a bit.
I've heard good things about Brasher's synthetic socks, but not tried them myself. I did buy a pair of Rohan's synthetic hikers, which I'm sorry to say I found to be very baggy and prone to feeling unpleasantly slick and clammy after a bit of walking.
In the past I've tried Thorlos but I was never taken with them. In fact these days I use 100% wool socks, pretty much the things I started hiking with, despite having tried all sorts of different synthetics, but luckily wool doesn't seem to bother me. The only synthetic hiking socks I can really recommend are the 1000 Milers, but try the ones with the wool outer if you can - the inner sock should keep it away from your skin - because they are much warmer.
My usual hiking partner swears by M&S cotton socks - and he stuck by this even through a completely soaked and chilly week on Skye. Can't stand the things myself, but there we are, spice of life and all that.
