You can do a hydraulic yourself for much much cheaper than that ebay price if you play your cards right. Member goldduster318 pm'd me with part numbers for all the required stuff from summit. Works out to considerably cheaper than retrofitting in an oem mechanical setup and way cheaper than that ebay setup.

As for the feel, yeah hydraulic definitely does have a different feel to it. Took me a while to get used to it in my civic after I was so used to the cable operated clutches in the 80's mopar fwd's. It is nice being so light on the foot and all, makes driving the car through traffic a breeze. One thing I really did notice helps is if the clutch has a definite mechanical "stop" when you push the clutch pedal in all the way, helps make it feel not so mushy.