I think this might be a long shot, but has anybody been able to directly compare the Black Widow Gold and the Guru Limited? I have both undrilled (Widow was won in a raffle) and was wondering if there is a significant difference between the two on the lanes. I'm thinking no but any feedback would be much appreciated.

The idea behind drilling one of them up is to have something asymetric to start with inside on medium(ish) conditions. As clean as my Mastermind Einstein oddly is the surface on it makes it too much and I don't really want to just add polish on it because I love the reaction otherwise. It's time to add a new toy in the bag to play with anyways.