Alright...thanks guys for getting us back on topic..
If I were a limited shooter..and had the .40 mags..I would go the .40 route ...the guns easily crosses into IDPA ESP division, USPSA Limited and Limited 10 divisions..you could shoot steel matches, bowling pin matchs and Bianchi Cup with little disadvantage...
I went for the 9mm as I do have an open gun still, and I shoot mainly USPSA open and production divisions. So I think a lot of the choice will be on what else you have planned and what other equipment you have..