We at WikiLawn Austin Lawn Care use Dundas. I'll say right out of the gate that it's not hands-down the best BI software I've ever used in terms of functionality, but it's the one that works best for us. Mainly because of the price point. So many software suites are being offered at prices that force out very small businesses.
Dundas doesn't do that, and they're also one of the most customizable I've seen.. Their API is open to developers so we can integrate their software with the apps we use to collect metrics.