I have a Jen Ken kiln with a digital controller which I use for
fusing. I've been very pleased with it. I bought it from Centre de
Verre. There's a lot of information on the warmglass site on kilns -
www.warmglass.com. While a lot of the info will be primarily about
fusing, it will give you an idea of which brands are good and which
ones to avoid.
www.isgb.org gives a lot of kiln info in their forum
archives.
Patti