Stricly from the dj-ing side of things, Rockclife pisses all over Beltram.....his mixing is way, waaaay tighter, and his track selection is better. For those of you who have described Rockcliffe's sound as tech-house, or in some way laid back, I think you must not have heard him for a while, 'cos he plays a lot harder than Beltram.
I've heard Rickcliffe about 8 times in the last 7 yrs and 7 out of 8 times he totally rocked it. Heard Beltram about 2 yrs ago.......sloppy mixing, and played loads of his own filtered productions, which caused the set to sound like one long filtered, slightly cheesy Beltram record.