I am a self-funded searchers and targeting businesses with ARV below 7 million (EBITDA - 750k to 2 million). I am not doing any industry focused search and planning to do research on the respective industry when an interesting deal comes in the pipeline. Could anybody suggest some resources to do industry research in an efficient way?

Also, what are your thoughts on relevance of BRG (business reference guide) vs IBIS reports for industry research in context of small businesses?