Every SunTour derailleur I have ever encountered, even the steel boat anchor bottom-of-the-line models, has worked superb(e)ly. Sunshine hubs and Sugino cranksets are great, too, although the latter can fail after extensive use (you do not want to know how I learned this). The higher-end DiaCompe sidepulls are every bit as good as their Campagnolo counterparts, as are Galli sidepulls.
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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