I used to run in a variety of different running shoes, mostly because I didn't know what I was doing. Then I got a bad case of plantar fasciitis that took a long time to recover from. Part of that recovery was going with Kayanos and Superfeet green insoles. That formula worked for me for 15 years more-or-less injury free (at least running injury free). Recently I had some tendinitis in my foot that kept me from running for a while. Working with a Podiatrist I made the switch to custom orthotics and have been running pain-free again for ~3 months with custom orthotics and Kayanos.

I read all these threads about folks trying out all the latest-and-greatest Hoka-this and Salming-that, and am wondering whether I should branch out a bit and try a few different shoes or leave well enough alone since I'm running injury free again. My big fear is that I switch to something new that feels great initially, but ends up causing some sort of overuse injury that takes time to recover from. Those of you that switch among different shoes regularly, please educate me on what I'm missing. If I was to try out a new shoe, what recommendations do folks have that are similar but perhaps "better" in some way than my trusty Kayano's? For info, I'm 6'0", 165 lbs (working my way down toward 160) and run 6-7x per week, ~25mi/wk currently. I also have very low arches and am a mid foot striker.

Edit: Also worth pointing out that I haven't been running in the same pair of Kayanos for 15 years. I cycle them out every 300-400 miles. (Yes, I could see that one coming a mile away).