The Aksungur is definitely more useful in recon role. I doubt the extra speed of Akinci makes it more survivable. Both are slow and very vulnerable if their electronic countermeasures are defeated. Akinci is an interesting project indeed. It is like the Reaper but it also has a lot of extra features like AESA radar, air-to-air engagement and cruise missile launching capability. I think the real purpose of Akinci is conserving the lifespan of the F-16s in the plethora of low-intensity warfare Turkey currently participates in.
Also, I think the diversity of drones in the Turkish arsenal is very impressive. Turkey currently fields 2 different indigenous kamikaze drones (Kargu, Alpagu), 3 mini recon UAVs (Bayraktar Mini, Gözcü, Togan), 2 MALE (TB-2, Anka), 2 HALE (Aksungur, Akinci). There are others in development too such as Saka (Micro UAV), Kargı (Large Kamikaze), MIUS and Göksungur (Jet powered), Songar (Mini UAV with a machine gun) and TB-3. There are also a few more I didn't list because of their current lack of prospects. Turkey simply blows away everyone except the USA and China in the diversity of military UAVs