I would recommend NAD. The Snells (I have owned EIIS and DIVS) are very bright and sound best when matched with laid back gear. Neither Bryston or Rotel fit that description. Another brand to consider is Classe.
New amp needed for Snell Type D's
My current setup is nothing too hot, but being the poor college student I am, I went with what I could: Snell Type D's, Denon AVR-2500 (good amp and preamp sections for the money, considering I was going to go surround), and a cheap Sony 10-disc. Realizing Super-CD or DVD audio is around the corner, I'm holding out on the cd player. The amps that I have taken an interest in: Rotel 990BX, 991, 985 NAD (I forget which numbers) Bryston (again, I can't remember the number) from what I've been told, the Snells are revealing, but bright. I'm looking for an amp that has plenty of solid state power, but around a grand or less. Any suggestions are apprectiated!