My 1984 Ibanez Roadstar II is a total dog (I keep it because it was the first bass I ever bought new and I've never seen another like it) but I have nothing but unabashed love for my 1987 Ibanez Roadstar II. I think it has to do with which factory it was built (there were several) and luck of the draw more than year of production.
I had one in the late-80's - I actually bought it because I had a set of EMG P/J with nothing to put them in (the Foundation S came in an active model as well so the battery compartment was already there). The end result was a bass that cut through the mix far better than any bass I had ever played. It put my P, Rick, Ibanez and Steinberger all to shame in a band setting. However, it didn't last as I could never bond with the neck shape and it had atrocious neck dive IIRC.