Heh, i do the same thing. Buy new wet weather kit, then pray for rain.
I have not tried the ones with a wool lining, all mine are an older version with just a plain inside. My problem with them was water running down my legs inside my tights, and filling up the socks from the top....
This year I found a pair of super thin waterproof tights that dont make me sweat to death, so im waiting for heavy rain to see if that solves the problem. My previous tights were just windproof fronts, and spandex backs so my calves had waterfalls of water runnign down the backs of them. Had rain both commutes today, but not pouring buckets yet so the jury is still out.
I also picked up a set of "Rocky" goretex socks from MEC.ca and they are a lot thinner than the sealskinz so fit better in my sandals. They worked well today, but again i need a torrential downpour for a good test.