on the issue of spikes vs springs…or ?….. probably best to get a reputable product ( there are many ) from a vendor that allows returns and listen, tweak and decide for yourself.
I would start w your Spendor dealer. I know a really good one with a great ear, exacting standards and impeccable ethics…not prone to hyperbole but an innovator in his own right…let me know if you need his firm name.