Well, my research is over, and through all of my efforts I ended up getting my Geico premiums increased.
Am I happy about this... Well, sort of.
I followed up with Foremost and found that they do use an "internal method" of calculating the value of bikes, which they would pay out on a total loss or theft. So their higher premiums were not due to the fact that I had accidentally over-valued the bikes in getting the quote. They did seem like nice folks to work with, but their premiums remained substantially higher than Geico's, which seemed to surprise the Foremost rep.
But this got me to thinking: Was there something about how my bikes were listed on the Geico policy which was resulting in a falsely low premium? This would work in my favor - unless and until something happened. And I would not want to hear something back from them like "We're sorry but your bike was not listed to be used as a daily commuter, so we won't cover you for what happened." So I called Geico to get details on how my bikes were listed.
First off, Geico does not care whether you use a bike to commute to work: They are all still listed as "pleasure use". Seems like they only think of cars as workhorses, so all motorcycles are just for pleasure. Can't argue with their logic, as it saves me money. Good so far.
So how are the annual mileages specified for each bike? Well the RT-P and K-LT were listed too low so we fixed them. And the GS? It was listed for "0 (zero) annual miles"! How much fun could that be? The Geico rep specified that this must have occurred in a recent change to their computer system, where that bike somehow got "defaulted to 0."
So we fixed that error, and it turns out that my premium rises by about $108.
So I'm bummed that my premium increased. But I am now confident that if anything happens I am accurately covered, and isn't that what insurance is all about?
So I'm sticking with Geico as they still beat everyone else by $225+.
Morale of this story, if there is one? Might be good to check every now and then to make sure that your bike(s) are properly covered/listed. While I don't have any personal horror stories about insurance problems, I do believe that insurers will do everything which is reasonably possible to not pay out claims. They are "for profit" businesses after all. And incorrect information within your policy might be all the excuse they would need to say "Sorry, you are not covered since you stated in your application that __________, but that is not how the bike was being used when the incident occurred."
Good luck and stay safe,