Okay, I skipped a step or two in the explanation of my radio woes. I was using a very good and reliable DX88HL in both the shack and the mobile. I was asked if I'd trade one of the 88's for a Magnum Delta Force. I played with the idea for a few days and , IMO, did the dumbest thing. I traded. I thought that the Delta Force ability to go back and forth as a 10 meter/11 meter unit would stand in good for when I got my ticket (planned for this winter). Well, the Delta Force was a let down on modulation after the 88, so I went in and turned up the radio. It blew the very weak voltage regulator. Put another in - both of them 754's. It blew that one, too ( I know. lesson learned. hindsight. . . DF's are power weanies 
). So I ordered some 817's. That held, but it forthwith blew the finals. I know how great some feel the Magnum DF is, however I don't think it stacks up to the durability of my 88's, nor their modulation and power capabilities.
My first mistake was not thinking of the difference in the radios in terms of comparing the antennas. For now, I've brought the 88 from my SUV into the shack and will run the old Gold Faced Super Star 3900 out in the mobile. A little learning curve on this 88 on the base antennas and the results can be posted.
What a deal.
2 - 3 months from now and I probably could see some light on the 751A you're looking at. It's the wrong monetary cycle for me right now.
As an aside, the Qv4k remains a compelling piece of work. I mounted it on my shed for storage purposes as it is so long and I did not want to dismantle it risking any changes to it going back together. I put my old Cobra 87GTL out there with an old Courier power desk mic, too. Only 10' up to the coax connector the SWR remains usable, I talk well locally, and any DX I'm hitting from the mobile or the base antenna at 35' to feedpoint I can hit with the Qv4k.
