Years ago, Engle were grinding cams for Hughes, so the Hughes range were a combination of the Engle lobes. There really aren't alot of companies that actually design the lobes themselves, they're just grinding other people's work.

Bullet's stuff is of good quality and service, you could also try Mike Jones @ http://www.jonescams.com/2006catalog_001.htm

A Comp Cam spec'd out by Brian at IMM in California or Dwayne Porter at Porter Racing Heads in Vermont would also be worth looking at.