I am using LAME to generate thousands of MP3s from a single AIFF, with different permutations of VBR, bitrate, frequency, etc., and using them to test MP3::Info for the forthcoming release. So far, the only blip was when I set VBR with 320 kbps and it didn't show up as a VBR file, but then I realized there's not much point to a VBR with the minimum bitrate as the maximum bitrate ...
