Harmony does work well with the Q5-10, However an air-mouse is your best choice, Here are my 2 favorite models
Probox Remote+ http://www.amazon.com/PROBOX2-Remote-Wireless-Controller-G-Sensor/dp/B00NAUMOMO
This model is simple and works perfectly, Has built in MIC and tales 2 AAA Batteries CON > NO kEYBOARD
Mele F10 Deluxe http://www.amazon.com/F10-G-sensor-Gyroscope-Learning-Raspberry/dp/B00LTG8CKO/ref=sr_1_1?s=electronics&ie=UTF8&qid=1447419340&sr=1-1&keywords=mele+f10+deluxe
This remote has built in rechargeable Li Ion Battery ( Not Easily Serviceable )
For me the best one I ever owned is the Remote+ fantastic for Kodi and Game Emulators like SNES, But if you need the keyboard I would go with the F10 Deluxe, I don't have a problem using the on screen keyboard with the Remote+
Hope this helps.
Derek.