Best shoe for chi running?

I have been trying out the Chi running techniques and like them except that I get pain in the forefoot (metatarsalgia) on my long runs. The shoes are newish with ~ 50 miles on them. I’ve been using both adrenaline’s and an Underarmour prototype stability shoe that feels really good for anything n up to 6 miles. Anyway, does nayone have a specific shoe recc? I had some Newtons last year, but do not want to spend $175 for a pair of shoes?

thoughts???