Merchant Services for QBPOS Discontinuation

Hoping some of my fellow retailers can help me out there...we have decided to keep QBPOS and find a new merchant service provider.  We looked long and hard at Spotify, but it is missing so many features that we use on a day-to-day basis. 

Has anyone been able to find a merchant service that integrates into the QBPOS program itself?  I've googled and found a few, but I was hoping there were one or two of you who could recommend someone.