Hello,
Been lurking around the boards for a while, but this is the first time I've posted.
I play RM2. I have never tried RMSS, RMFRP, or HARP. The newer editions of RM (I can't remember which came first, RMSS or RMFRP?) started coming out around the time that I joined the military. I was stationed at a small base in Korea and couldn't find any players, so my gaming was reduced to nil and I saw no need to invest in a new edition (I preferred to spend all my pitiful soldier's pay on wine and women instead of gaming books).
Plus, around this time I was getting disillusioned with the RPG gaming companies. Some (not ICE specifically, mind you) seemed to be taking their loyal customers (like me) for granted, cranking out tons of very bad product and assuming that we'd buy it anyway just because they put it out. That put a bad taste in my mouth, so that when ICE came out with RMSS (or RMFRP, whichever it was) I had a kneejerk reaction ("Oh great! Another company that's decided to stop producing a game I have supported for years so they can force me into buying it all over again in a new package!") and walked away from RM and RPG gaming for years.
I got back into gaming eventually, but most of it has been via PBEM (I live in a small town in a small county and have had no luck finding a gaming group) and none of that PBEMing has been in RM, so, again, I never saw a need to buy a newer edition.
From what I have seen written about the newer games here on these boards and in articles on Guild Companion, I think there are some interesting elements (I especially like HARP's scalable spells), but I doubt I will buy any of them. I played RM2 for years and it always worked fine for me and my core group of players (with a little tinkering to make it fit our game worlds), so I don't really see a need to replace it (if it ain't broke, don't fix it!).
Cheers,
Christian