Please understand that Orange has two network technologies: HSPA, which is what most Kenyans generally mean when they say '3G' and CDMA/EVDO which Orange markets as 3G-Plus. The latter has a wider footprint countrywide and offers decent speeds at reasonable prices. Been on it consistently for well over a year now. The former however is only available in a few locations countrywide.
Life is like playing a violin solo in public and learning the instrument as one goes on.