Here are a few others I would reccomend, these 2 offer a aluminum bedding block in their stocks.

http://www.accurateinnovations.com/index.html


http://www.hsprecision.com/new_stocks.htm


and an old stanard.... http://www.brownprecision.com/brown-precision-stocks.htm

and another.... http://www.rimrockstocks.com/

and there are others


It depends on your wants/needs and specific applications but you should able to find one you like with these companies.

I use Mc Millan stocks as I beleive they are one of the finest made.