I had one of these drives attached to my keyring for several years. During that time it was bumped, banged, dropped, kicked, sat on, submerged in water, and rattled against my keys on multiple occasions, with no problems. In other words, these things are durable.
I used a couple different drives prior to this one, but I kept losing the caps to them. That's what originally drew me to this drive. At the time, it was one of the first drives available that offered a retractable USB adapter. This feature did add a little bit to the overall length, but the fact that I would never lose a cap again more than made up for the extra bulk.
Throughout the time I used it, the performance over USB2.0 was very good. In fact, this was likely the fastest drive that I've used.
The drive case itself is not pure titanium, but I never expected that it would be. It does have a very distinctive, bright blue LED indicator that flashes when data is transferred, which sets it apart from many of the other drives out there.
Eventually my drive began having problems, but it was well over a year from the time I bought it, and it was treated fairly rough the entire time I used it. I believe that it served me well.