I've looked around but found varying information on this subject. I have some circa 1995 Shimano RSX dual pivot calipers, but I'm guessing this information would be useful for anyone with similar era Shimano road brake calipers.

I need to know what brand/model brake pads will definitely fit in the slightly narrower caliper slots on these particular brakes. To keep costs down, preferably something that is currently in production (rather not hunt down new old stock). I also really don't want to have to file down the post or the slot to make something fit. Does anyone use similar brakes and know for sure either way?