I usually shoot with prime lens. The biggest headache I faced when going to Full Frame is to find a good and affordable standard zoom lens like you can get so easily find with DX format. The 24-70mm F2.8 is way out of my reach, coz I am not a pro and I dun usually take events. In the end I got a 2nd hand tokina 28-80mm F2.8, way more wallet friendly and meets my expectations for AF speed and sharpness. 
