Yep! E71, E72, and E6 were some of my most loved phones. My love of that form factor meant that my first foray into Android was the HTC ChaCha - that was a mistake.
Oh man qtek flashbacks. I had a 5050, great device but good lord the battery life ducked as soon as you connected to anything (and it only had mobile data, no WiFi, unless you put in an sd expansion card). No more battery? Then your data gets wiped
It was slow and buggy, but it felt like a handheld computer.
Qtek rebranded to HTC and I bought a HTC Touch running Windows Mobile 6.0, I am not sure when or what I switched to afterwards, maybe an Android.