headsh0tI have.
This one is way better.
Even though the bearings are POM instead of ball bearings. they are clearly superior to the "not-a-bearing" logitech uses.
The ball on the CST is also nicer quality. I like the larger ball trackballs as well and can't imagine using one that's less than 2" in diameter. You can swap it out with a standard poll ball if you like, they are the same size (2.125")
Actually, since it's phenolic resin, you can probably use it as a pool ball if you need a spare :p
The description is a bit mis-leading. There is no scroll wheel with this CST.
I vaguely recall the middle button can be configured for scrolling (/w the trackball) or middle click with a quick solder change.
HaaTaOn mine, you press and hold middle click to enable scroll mode, which is pretty awesome. Unfortunately, you have to hold for like three seconds.
I like how in the manuel, they tell you haw to open it up and take it apart (for regular trackball cleaning, etc.) As I said before, if not for the "fatal flaw" of shape and poor bearing choice, this would indeed be the "clearly superior" option. The same applies to their higher DPI laser units.
@bmpwe I am currently using a modified ITAC systems Mouse Tak Industrial, but I will be upgrading to a Penny&Giles or vintage Kensington (or both) with a DIY 8200 DPI sensor soon.
To compare pricing, the ITAC MSRP is $250. I haven't seen any numbers, but P&G likely cost more. I tried contacting USMicroProducts (who currently own P&G's trackbal line) for pricing, but they were not as forthcoming once they fgured out I wasn't a real buyer.
If you're interested in somehting better, be prepared to shell out serious cash, or get a used unit to refurbish. Pro tip: most arcade balls I have seen aren't that great for computer use and/or require serious modifications.
I do have a question. I see the following on the specifications:
"Dupontt, Deltrintm with Teflon bearings"
Are the bearings PFTE (teflon) or POM (delrin) ? The ones in mine appear to be POM, but they could have changed in the last few years.
I have the black version of this trackball, and used it for quite a while. It's nice enough, but I have since upgraded to more industrial trackballs with ball bearings.
Keep in mind that while this is optomechanical (quadrature) it's still got enough DPI for most uses. I would say the counts per revolution is more important, and with the 2.125" diameter ball it's good enough.
It has POM sleeve bearings which pale in comparison with ball bearings, but are quite nice when compared with a "normal" consumer trackball.
I would recommend replacing the ball with one from a pool set for aesthetics once the original ball gets scratched and used.