Please be serious about your experiences ...
That's such a tempting opening but I'm going to resist ...
Doug, you can stop reading now. I'm not going to do it.
This has been discussed at least a few times and there are wildly differing opinions that won't ever be reconciled. Similarly differing opinions can be found on other audio topics like amps, speaker wire and interconnects. It comes down to two groups, subjectivists and objectivists. I have recently met some DIY'ers and listened to some of their home grown speaker designs played on high dollar amps with fancy DAC's fed by MIT interconnects. At least a couple of these guys like their spikes. They swear by them. Other guys say they don't make a difference. Some people are better at discerning what they are hearing even though their hearing is just like everybody else's.
Try running a search to track down these discussions but the bottom line is that this is something you are going to have to hear for yourself and it may take some time and effort to determine what you think you hear. The best part about other people's opinions is that it provides a point of reference.
The real question is what kind of spikes are you going to get? Which ones are on your radar? I need to know these things because if I can afford it I want to get the next model up in order to feel superior.
