For me the period 92-94 was the most interesting: fluorescent paint jobs, barends, and everybody basically doing some variety of XC riding all together. I also recall an amazing and infectious spirit of adventure, going out and discovering routes on Dartmoor that were rideable on the MTBs of the time, or showing your friends the new trails you've found out, linking them all up into superb all-day routes, etc.
After 94 I started to feel the shadow of DH hanging over the MTB scene. before that, our group would go out on rides together and the routes had something for everyone: those who liked tough climbs, those who liked fast downhills, and those who preferred the roughest downhills, drops, etc. Once DH separated from MTB, XC rides became a bit lonely because the DH-oriented guys preferred to spend their Sundays building berms and doing jumps in the same patch of woods.
In 96 I left home and ended up spending the next 7 years in a region without any real hills and no wild areas to explore, and after a couple of years my interest waned, the bike got stored back home and forgotten. Fast forward to 2011 when I moved to Portugal from Mexico, and I was surprised to see people riding round the city on what looked like long travel DH bikes with 100mm forks, disc brakes, risers, etc. I still ride a 90s bike with PACE forks, because it makes me smile and it works for the gravelly trails we have over here. And I think if I coul reach back in time and pick out any bikes from any period, they would be Raleigh Dynatech MTBs from the 93 or 94 catalogues, which for me were the pinnacle.