I just sold a bike that had a Suntour Honor rear derailluer on it. It was set up for friction shifting on a 6 speed Shimano hyperglide freewheel. I rode that bike 100 miles or more before I sold it and quite frankly it worked just about as well as any other derailleurs i've used (though I wasn't using a triple so I'm not sure about that). I've also used several older Shimano Altus derailleurs on both friction and indexed setup's and they have always worked well. Honestly, I don't think you have to spend big money on a high end derailleur to get good performance.