MSP Benchmarking // Service Leadership, QoE Providers

I am looking at an MSP company that is doing $1m in SDE ($0.8m in adj. EBITDA). There is a broker involved who has valued the company based on "Service Leadership" benchmarking reports - an MSP IT industry resource. I wanted to see if I could get advice:

1. How reliable are the Service Leadership benchmarks? (And do you recommend another source)
2. Is it common to value MSPs under $1m in cash flow using an EBITDA margin multiple and/or multiples applied to the breakdown in revenue (eg MSP, Hardware Sales, Project etc) as opposed to the more traditional approach of using a multiple of adj EBITDA?
3. Can anyone recommend a QoE provider that specializes in MSP deals?

Thank you,
Rob