Re: Rio Grande "Stelly"
Please remember that tone is in the ear of the beholder, so don't take my experience as the bible.
I own a Music Man Albert Lee. I wanted a little bit fatter tone in the bridge position of the guitar, so I ended up ordering a whole Rio set (Stelly in bridge, Tallboys neck and middle). The Stelly was a really hot-sounding, fat, middy tele pickup. Hell, the thing is even constructed like a tele pickup. No cover, big bobbin, big pole pieces. That being said, those pickups stayed in the Lee for about a month before I put the stock Alnico 2 Pros back in. Although the Rios sounded good, all the bell-like clarity was gone, and they completely overtook the natural tone of the instrument.
Some people swear by Rios. I don't. I prefer lower output pickups that allow the guitar to be included in the tonal equation.
I'll probably be trying a Twangbanger next. Pretty close to the Alnico 2 Pro I already have at the bridge.