We have tried them all. Guide clearance after a few track days is usually a couple of thou larger at that point. On the street cars I have disassembled engines for. The one that was fitted with phosphorous bronze were better than the old style bronze guides but were still over clearance after only being built (by another workshop) within the last 12 months.
We recently pulled our race engine apart from the GTR which had cast iron guides made by our engineer, Chilton Engineering in Woolloongabba, and after 2.5 years of continuous racing, the guid clearance is still perfect.
Nissan use cast iron guides in all their engines from factory but usually after 10-15 years they are a thou or two over clearance on the exhaust side so we normally knock them out and have them redone