So I almost got screwed hard by using svof's serverside (it just wouldn't cure paralysis until I turned off serverside, and I had everything in my inventory). It randomly will not put up defences or cure, and there's the thing where it tries to put up blindness before curing anything that's actually bad. I've heard wundersys is pretty good since it was built with serverside in mind and I have a lot of the things svof has already programmed myself (angel reporting, etc.)
There are a few other issues I have with svof:
1. you can't mount without it putting it on keepup
2. it breaks with k's bashing script (you can't do)
3. doesn't use serverside queuing?
4. I don't think either one uses gmcp affliction tracking
Before I start the huge move over to wundersys, I'd love to hear about other peoples' experiences!