Non-indexed DT on the road bikes (2 Campag., one SunTour), SunTour Accushift thumb levers (in friction mode) on the mountain bike, and SunTour ratchet barcons on my still-under-construction cyclecross bike.
What I dislike:
1) RapidFire (sorry, R.F. fans, but I tried them on a friend's Raleigh and did not care for them, particularly on the front);
2) any sort of indexing of the front derailleur -- an unsound concept!
3) anything unreliable, fragile, short-lived, overly touchy, or subject to planned obsolescence;
4) stem-mounted shifters.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069