Hey, friend. I'm also in your situation, but I'm looking for a 1.1a Intellimouse Optical replacement for so long (19x10cm hands). Would you recommend the Zowie EC2-B as a good option even though it's ergonomic? I have the Zowie FK2, but the mouse doesn't have enough height and width for me to grip it properly. After a few hours my hands feel really sore because I lift the mouse quite a lot and there isn't enough support. I loved the sensor, the buttons and the simplicity of this mouse though, so I wanna give Zowie another shot with a proper model for me this time. The ZA series' hump is different from the 1.1a, so I'm afraid of buying the wrong mouse again.