Thank you GRAY LITNIN, ven and arKmm for your answers.
As I expected there are a lot of different "paths" for my upgrade.
@Gray Litnin: the Convoy S2 seems to be the cheaper and best selling option,
so for a few bucks, before the decision for a more "professional" flashlight,
I think I will...
Thank you GRAY LITNIN for your answer,
I searched a lot before posting this topic, but I have to admit, I didn't consider this Convoy S2 series
because when I searched info (1-2 years ago?) before the purchase of my Yupard and Ultrafire,
I remember that the Convoy (maybe not the S2, but...
Hello fellows flashlights fanatics,
I am a just registered newbie from Italy, with a little collection of only "cheap" flashlights,
looking for an upgrade in versatility, reliability and of course... power!
Just for reference, here's my little collection...