Red got me into Pokemon. It was at my friend's house, and his old GB had like no batteries and the saves didn't work, so I only ever got to about Viridian City City every time I played it (which was every time I went to his place). I played Gold there, too, which was cool as.
My first real game, however, was Emerald. Oh damn that was fun; getting owned by Brawly until I had literally less than 100P. :D WRY YOU HAVE SO LOW DEFENCE, GROVYLE?
If there is an RSE remake, I'll actually be at a loss as to my starter. Swampert is a pretty good Pokemon overall, but Sceptile is my favourite... and Blaziken is quite unknown to me; it does have a sweet movepool and great offensive stats, though...