West and Michie Code

In 2003, S.B 180 entitled the "Public General Laws-Evidence of the Law" bill established the West and Michie (now Lexis) versions of the Maryland Code as equally official versions of the Code. This raises the question: what's really the difference between the two? Having not done a comprehensive assessment, these are some of the basic differences: the West version is overall cheaper and appears to have more annotations. The Lexis version is more popular, is more compact (volumes that take up 3 volumes in the West version only take up 2), and, according to some, has better indexing. I'd be interested to hear other responses.