Thanks all,
I thought in Elinchrom, but don't exist any dealer here and repair services, If i had any trouble I will need to send for other country, this is a bad way I think.
Hensel is the same thing.
With Profoto and Broncolor I can buy it more cheaper in the U.S., but If i had any trouble, can I send for local repair service.
About the other entry level brands, I use Atek and is good like Paul C. Buff, Calumet, Dynalite, I really will like go up, because of this I chose this three options, maybe some expensive, but is like a marriage, I'll use for many years.
About modifiers, can I use my softbox and octabox I will need only new speedring and there are some generic brands, I don't need buy every bron or profoto brands. I found some used reflectors on ebay for less than 50% of original price.
Sorry, I can't explain every thing that I want, my English is very limited.