For the past several years I've used the Giottos MH-1300 ball head. As ballheads go, I suppose you could say it did the job. The reason I replaced it with Markins Q20 was because I had problems with ball head creep... Yeah, the creeps! When using shorter lenses, the amount of creep was managable. However once you get up to 500mm in focal length, the amount of creep was pronounced. Now that I have the Q20 and have tried it out, there is NO creep!! Not even the tiniest amount And unlike the Giottos, it only took 1/4th of a turn on the big knob to really lock it into place.... Extremely happy with it. And since it does accept Arca-Swiss type plates and mounting brackets, it's so much EASIER to use!