I don't really see how someone can suggest a focal lenghth. Everyone has their own style. If your asking which is better they are very close.
Primes are hard to choose and in time you will probably realize you need a set of them. That is assuming you like to shoot with primes. A general rule is 24/50/100 or 35/85/135.
too true. I like the versatility of the 35mm focal length, but if you want versatility, you get a zoom. The 24 is more of a speciality lens, since you've got versatility covered. Street shooting = 24 or 28mm IMO. 50-85 = portraiture. Odd man out, the 35, can do a bit of everything in a pinch.



