Budget camera gimbal for 450 quadcopter and like

[cofl1001]

Hi All
I have a 450 HJ alien quad and currently I have a small pan/tilt plastic "gimbal" attached on two servos linked to my Crius aiopv2.
I currently have my sony tvl cam for fpv there but I got some crazy servo jitter on the roll axis so I had to unplug it from the FC since it was unusable.
I setup my devo 10 2 pots to control the pitch and roll axis and they compensate ok, (the pitch since the roll jitters) but I am considering some actual camera gimbal for which I could attach my olympus pen camera for example...
I know that the best way would be a setup with brushless motors + dedicated controller but that would add up too much to the cost...
Can anyone reccommend a 2 servo working gimbal on a budget and especially the servos used(analog might be better) ?
I found on the goodluckbuy site this : Scorpion 2 Axis Y650 Pan/Tilt/Zoom PTZ for XAircraft for ~25 usd and the reviews seem positive but I am asking for some proved and working setups that you guys used...
Thanks a lot for your opinions.