Thanks guy for your help.
I think i'll sell my UDM and buy a flex to start off with. I appreciate alot your help but i dont feel like spending the 500-600$ for a paint gauge right know. I dont think i would feel confortable with a rotary without one.
I spoke with 2-3 professional guys in my area and they all recommand me the flex.
I think i'll update to a rotary next summer.
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