I tried both CEC lamps from TheRealBobRoberts.net (great video game resource) as well as Eiko lamps from various sources. Plus my machine had about 50% original GE lamps and about 50% of a foreign lamp (nickel base, stamped "ITALY"), and then the 100 packs of 44 and 47 Ablaze made from PBL:
Overall my impressions are:
New Ablaze incandescents - Nice. No problems yet.
New CEC - Suck .. strange texture to lamp causing a weird star difussion pattern. Only 1 burn out
New Eiko - Acceptable, again not the best made glass at all, some weird light patterns. Only 1 burn out.
Used Italy ones - absolute crap.. Filaments busted simply removing lamps, didn't matter if cold or hot.
Used GEs - Amazing.. take anything, complete dropping 4' onto carpet or 2' onto playfield, and light right back up.