I just wanted to chime in. I had two Widow Solids, one I sold quickly so I'll disregard it. My other one however was great, well for a while at least. I always clean my stuff right after I bowl, Clean and Dull after 15 games or so.
The Widow for me just started to die out after 1000 games, hot water bath, resurfacing, baking, nothing worked. It was the first ball to significantly lose reaction on me. It became a Mild Solid on mediums for me with a meager arc on the backend. It lost what it was, surface adjustments and everything I just couldn't get it back to what it was. It just wouldn't turn on the conditions it had surprised the hell out of me on before.
This is just my first hand experience.
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iBowl