I'd guess it's that particular model, as none of the trackballs or mice I've tried have been like that. Maybe try a Kensington Expert Mouse? Same form factor

I'd guess it's that particular model, as none of the trackballs or mice I've tried have been like that. Maybe try a Kensington Expert Mouse? Same form factor as SlimBlade, but the buttons look more like proper buttons. I have several of them, and have never had any clicking problems (it's quite a bit easier than a mouse, in fact, because the pointer stays still). I haven't tried a SlimBlade, and don't plan to (I like a physical scroll ring), but I can recommend the Expert Mouse (though I wish they'd called it an Expert Trackball or something!). I recommend the wired version over the wireless one.