I agree somewhat. I really dont care the brand of ball so much, but if I have the choice between a new ball and a used ball, i prefer the new ball. Some snobs at my club only like to use nittaku. They would seriously rather use an old smooth nittaku than my brand new DHS DJ40 WTT edition ball. That is just crazy to me.
Also, definitely agree that you have to be able to adapt to different kind of balls, playing environments and distractions. In fact, the other day i was warming up, using my AWESOME DHS ball, and my hitting partner (who wasn't playing in the RR that day) asked if i am worried about using the DHS ball before the RR where i would most likely be having to use a nittaku. I told him now....the difference is so small i would rather be able to make the adjustment. If my mental game is so weak that a different ball distracts me from doing my techniques and tactics, i've got bigger problems.
the same goes with all sorts of other distractions in TT. I train myself to play through these. Sure i might lose some points in a match because i didn't call a let when a ball flies by, but i have been training my mental fortitude and that is worth more in the long run than losing one point in the a single match. Case in point- one of the best players at my local club was telling me how he was up 8-4 at the US open in Huntsville. But then some kid ran behind his table in the middle of a point. He got distracted and so upset that he lost the next 7 points in that game, and eventually lost the match. Yes, that kid should have waiting before he ran to get his ball, but as a player, we have to be indestructible from distraction, and if we do get distracted, we have to let it flow through and out of us so that we can play our best on the next point.