My spouse owns a small IT company and we had SIMPLE IRA since 2007. The highest employee count was in teens one time and now 9 but contributing employees were max of 5 any time. We do a straight 3% match in SIMPLE IRA. I left my job at megacorp
We have had several small business employers asking about Guideline over the last year. Some have indicated they went with them and I think one or two reported that things were going well in the first few months.