You'd be surprised. . .a goodly selection of people on this board, many old farts.
I liked the setting based books, arabian, viking, egypt.
Found the concept based books a little weak on rules, Rapiers Point had less needed info in it than say the arms companion did. (If anything the AC went too far.). . .it was almost a setting disguised as a rule add on. That said, I occasionally use my copy to beat on my copy of "Robin Hood" which I like less.
Time Riders seemed less useful than the RoCo with the SM/RM conversions.
Dark Space. . .well, I had all the monsters in CT2, I found the softech bleh and the setting bleh bleh. . .like, if I wanted to do lovecraft I'd do lovecraft, and if I wanted a house version I'd do my own. (It always struck me as a little soft shoe routine to avoid getting sued by the CoC people by publishing almost their material with different names and very slightly different details.).