http://www.spanielsinthefield.comhttps://www.oahekennels.comHigh end on price....however, his Dogs are in demand. Many others can be had for less. The above online magazine is a good starting point.
Good Dogs are coming out of the South....Especially the Carolinas and Georgia. In particular, where they use them for plantation Dogs. If you are willing to go South, then look up any of the hunting plantations and give them a call. They may have pups or know of current litters.
Don't limit yourself to a particular area. Find the right litter and don't wait. My last one came from Georgia. A Dog carrier delivered him to the driveway.