Ditto to this... if the shoe fits, wear it. Literally. The first concern, heck really the only concern, is that the shoe fits you well.

As far as style of shoe, I would also agree trying to look for a lighter shoe or boot. Trail runners don't work for everyone (me being one of those people) but if they do they are fantastic. Lighter, cheaper, faster break-in time. Because of my ankles/general aches and pains, I went back to boots instead of low top trail runners, but I try to find the lightest boot I can find to help my knees out.

On the PCT I used a pair of Merrel trail runners, which I loved, even though I ended up having issues with my ankle (not a problem with the brand, just a problem with the style). They were very comfortable, and held up to 1000 miles of hiking, so I would recommend them as a brand.