I have owned and flown P3P with GL300B and it seemed to have the same range as my original P3P with GL300A (which I still have).
I was hoping that by getting a P3P refurb in December, that I would have a chance of getting either the GL300A or B, but unfortunately it still came with the GL300C.
So if I get a P4, and I purchase a GL300A off of eBay for better range, will the GL300A be able to fully update the P4 just like the GL300C (since you stated that the GL658 series can't)??? Also, I have use an iPad Mini 4 to fly, is there any advantage to the GL300A since it has video processing capabilities, or does that not really matter?
Thanks in advance for your answer.