Thanks a LOT, ShotgunOd, you got the target of my worries at its center. I'll do exactly what you said. I have bought yet LightDome LE, Studio Light LE and Mood Master, which I use now every time, and shall add immediately all the others in my Daz collecting cart. Answers like this are extremely precious for beginners, saving lot of time lossed in straying in dead end way, and saving lot of money wasted in unusefull or inadapted products.
I got no time this morning to visit your gallery, but I'll come back this evening.
Good place, here.
Friendly, LocusSolus.