They certainly are pretty terrible servos. I bought a pack of 6 of them a few months ago just to see what they were like cause they were only 50 bucks :D.

Of them all, only 2 survive to this day.

They start off ok, they have decent torque and really fast transit. They're a little twitchy to begin with, and they don't hold position real well, but for such a cheap servo I was willing to let that slide.

The biggest problem with them was when I tried to use one as a throttle/brake servo on my new Hyper ST as the stock servo died in about 20 min.

I had to give just over 1mm play on the accelerator side of the linkage, if that makes any sense, because of how crap the centering on these servos are.
What would happen is, when I applied brake, and then let the trigger on the TX center, the servo would re center by going PAST neutral, giving a little blip on the throttle as it went to that side, then going back to neutral. This got really irritating at the track as every time I braked for a corner, I got a little burst of speed when cornering instead of being able to roll around the corner.

All of them were terrible as throttle/brake servos but ok as steering, but as they died, they got slower and slower. I used one as a single steering servo in my Revo, another 2 in my Hyper ST (steering and throttle/brake), another as throttle/brake in my Baja and the last 2 I gave to a mate who ran one as steering in his 8ight-T and the other in his Baja as throttle/brake.

The only 2 that still survive are the ones in the Baja's and that's only because they get run maybe once every 2 months as there isn't anywhere we can take them :(.

All the ones that were doing steering seized up. Totally frozen, couldn't even turn em with pliers. The ones as throttle/brake were really worrying as they just got slower and slower until they just stopped working. I got lucky, I noticed mine was dead right after a race. I'm just glad it didn't stop with WOT.

I wouldn't trust them to a throttle/brake servo for exactly that reason. If they get stuck at WOT even a throttle return spring wouldn't be able to close the throttle as they're really tough little servos. I don't mind it as the throttle servo in my Baja as I have a remote kill switch. No such luxuary on a 1/8 nitro.

I'm running HS-5955TGs for steering in most of my 1/8s now which are miles better.

Anyway, just my 2c. They're ok servos, but you definitely get what you pay for. Just spend the extra and get a quality servo first off :D