Ever since Keller's Crunch folded, I've been looking for a substitute. I actually haven't sampled it myself, but I gave Enstrom's Almond Toffee to several folks this holiday, and they raved.
Until the end of the month, Enstrom's is havinig a two for one sale. Although the initial postage is steep, extra packages are cheap to send after the initial one-pound order, at least if they are going to the same address. And the price of the toffee itself is reasonable.