Taco John's just opened by the Kettering Meijer and my co-workers liked it a lot...but I dunno if it's been my mood recently (in trying to not eat out as much, especially fast food) or if it just was underwhelming. Certainly better than Taco Bell these days, but that's less about Taco John's being great and more about how downhill Taco Bell has gone.
I'll try them again when I'm in a better mood maybe, but for now I'm saving my money. It wasn't bad...just I dunno, not worth the time we waited for them to finally open up.