Oh, I don't mean that they aren't rather quick in stock form and capable of a hell of a lot more - rather that - well - they don't move that fast with snapped rear halfshafts, worn-out synchros, crankshafts that move in three directions, slipping clutches, extremely weak FPRs, too-small MASs which, by necessity, are placed at the beginning of a charged intake, rubber charge pipes...
I think that above all else, I hate the brass synchros. With the cars getting as old as they are, especially with the 225mm clutches for a car with 203/214 ft/lbs tq from the factory, it's getting really hard to find one that hasn't had GL5 fluid in it at one point or another, and I'm damn tired of tranny swaps and rebuilds.
That being said, my personal record for an AWD tranny removal/install is 2:45 for a basically stock 92 Laser AWD w/ ABS, using only hand tools and without a tranny jack.
That's out and back in, not counting the three minutes it took for me to replace the clutch fork pivot (the reason for the drop) or the ~15 minutes it took to refill the tranny. I'm rather proud of that.