Congrats. I bet you would breeze through the normal difficulty now with ease.
That Castlevania collection has a bunch of greats in there. But too bad they couldn't include the two best of the series, Rondo of Blood and Symphony of the Night. They must be saving those for separate releases.
[EDIT] Ahh, just checked and yes they re-released the The Dracula X Chronicles on current gen consoles which should still include the original versions as unlockable content - unless they removed that.