Asking opinions on Avidyne IFD540 vs. GTN650

I'm about to do a panel upgrade, and have been asking everyone I know's opinions to build a comparison between these two navigators. Essentially, I have about $20k-ish to spend on panel upgrades for our flight schools 172. Currently the thing has an ENTIRE Narco stack: From Audio panel to radios to ADF and all indicators.
I want to install a nice IFR Navigator and take out as much of the Narco stuff as I can and still be in budget.

What are y'alls opinions between these two? Price is somewhat comparible, with the 540 being a little cheaper when you factor in it has wifi/bluetooth built in for syncing with a tablet/foreflight.

This bird is ADS-b out equipped via an old transponder and a Freeflight unit.