I'm looking at replacing my glove and possibly block in the future, and right now I have senior equipment (Vaughn T2000 glove, Brown blocker). Both are just a little on the big side, so I spend a lot of time pushing my hands further in. I tried on some senior and intermediate gloves at the store the other day. The senior stuff is still a touch big, but the intermediate gloves fit, well, like a glove. They weren't tight, just snug, so any "swelling" (for lack of a better word) that occurs during play shouldn't make it uncomfortable.
What I really want to know, is there any major difference in protection between senior and intermediate, or by going with intermediate sizes am I asking for a lot more bruises? I play with adults of all levels, some who can really rip the puck, so I don't want to invest in new gloves only to have them let me down safety wise.