R-Type was also one of my favs.
I managed to complete it on the PlayStation (pre PS1).
A couple of years ago I tried the arcade version (using mame),
and it seemed a lot harder (more enemies attacking at the same time).
Used to love splitting the ship up, & bashing/blasting them to bits.
The mega-blast was just awesome at the time.
Never really got into R-Type 2. Like all 'follow ups' it never plays the same.
There was also a third mega version, which had been given the full jap
arcade 3d-ish transformation. Very colourful it was, and hard to play !!!
Glad u now up & running.
U need to try the others aswell ... have fun : colors1