I also have a DRAMM One-Touch. I have several breakers for it, a Lemon head, a 170AL, the 400PL that came with the wand, and a set of 2GPM and 6 GPM FOGG-IT (on the way) nozzles. Just because I like to test crap... From those I love the Lemon Head (750PL). It's the only one that seems to not disturb and move the soil around when I water the trees. What I don't like is the wide pattern, the only reason I bought it was because it is near impossible to find the 480PL or 480AL without paying almost the same price for shipping.
If we are talking about regular watering wands, the DRAMM One-Touch with the 480AL would be my choice, it is small and have a nice soft spray that won't disturb the soil, but if you have big trees the Lemon Head, or Red Head would be the best choice. Outside from regular, the Joshua Roth would be my choice. It is the same entry level wand sold by Kaneshin and Kikuwa on the Japanese websites, but with the adapted 3/4" FHT that is the norm here.
FYI
DRAMM Red Head (1000PL), Lemon Head(750PL), and 480PL(or AL) have the same spray profile, only difference is the size.
DRAMM 400PL(or AL), and the 170PL (or AL) have the same spray profile, only difference is the size.