Valobra and Tabac are my current favorites. But I usually use Williams pucks or Nivea cream rather than the sticks.
Prior to reading that I had no interest in trying Valobra. Now I have to know what that smells like...
I've only tried 4 shaving sticks so far, but here's my list, first to last:
1st: Tabac. I can't imagine how a shaving soap can get better than this. Currently I'm using Tabac for my first shave of the day, every day.
2nd: Palmolive. Insanely good value here in the UK. I get really good shaves from Palmolive but for me Tabac still beats it in all departments except price.
3rd: Arko. It's very good and lathers very easily but I find that both Tabac and Palmolive give me better protection. I suspect that I'm not getting the water mix quite right; Tabac (especially) and Palmolive seem to be more forgiving in this respect. Then of course there's the scent. I don't hate it but I certainly don't love it either.
99999999999th: Boots (UK Chemist's own brand). I've seen some good reviews for this but I got a burning sensation from it the instant it went on my face, and on top of that I could not get a decent lather out of it. For me, it's just plain unusable.
Just finished a stick. Great lather, and a nice scent, unlike the Tabac counterpart. Have two Wilkinson Sword