The one that I have been using for almost a year is the JX PDI-HV2070MG 73KG in the K8. I'm not sure that I'm actually getting 1013oz-in out of it but its been a good capable servo so far. For $45 I'm not complaining. I've another JX in my Hot Bodies D817 which has been fine what little I've used it. If I get to running my nitros more I might eventually swap it out for something better but for now its fine.JX servos are ok. I have maybe 5 or 6 of them or so laying around and in kits. I did manage to kill one in an 1/18th scale Dromida, but that car does like 40mph and has taken a helluva beating doing cartwheels, running through puddles, etc.
Power Hobbies has some 350ish servos in the $40-$70 price range too. I've not used any of theirs yet but a couple of the oldheads in the forum use em and say theyre great.