What type of fluorescent bulbs are the best ones? ...

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Answers:    BEING THE THIS IS THE GARDEN SITE i ASSUME YOU ARE ASKING WHICH ONE WORKS BEST FOR GROWING?
T12's are the most common also certain as the shop light they enjoy the largest diameter bulb and are about 2$ per bul and 10 for a fixture.
Next is a T8 which is a bit skinnier and puts out more neutral
Then we have the T5 which is amazing, you can in reality fruit and flower productivly under a T5
Finnaly we hold whats called a TT bulb which is two markedly skinny bulbs fused together and pressurized to the max.
heres they typical output in Lumens

T12- 2500 lumens
T8 - 3500 lumens
T5- 4500 lumens
TT105- 10,000 lumens (four foot bulb)
Cheers!
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Compact Flourescent Lights (CFL)