"Over engineered for our events with <100 people"
We have the same numbers for our Club Events, but we stuck with OE, as when we do bigger events, our members are familiar with the system
MEOS is pretty easy to use and less stressful and I reckon a pretty smart choice for ADHOC. Keep it simple! :)
MEOS would be a pretty smart choice for most OWA events, as we rarely get 100 people these days. I can't seem to convince anybody though.
I had a look at Meos once but couldn't figure it out. If I can figure it out, I'd be happy to use whichever one was easier (Craig S seems to think it's pretty good).