Comparision of RTK vs RTK2

I’m having trouble comparing the two Sparkfun uBlox Zed-F9 GPSS boards… one named RTK; one named RTK2. Is there any difference? I see from the photos that the two uBlox chips have different last numbers on their module model number. I see the antenna connections are different… SMA vs uFl. They also have different backup batteries. But is there any other difference that would affect performance and, therefore, my choice?

Thanks

Are you talking about the ZED-F9P boards?

I don’t think there’s any operational differences, we just had a difference in naming to differentiate between the two part numbers. We’re not always real consistent in how we name products since we have different teams working on projects.