Im finding the MX9XX series more sensitive than the 8XX. More Tamper detection, NFC just frying also, had 3 units NFC die. Apple pay is big in Manhattan, Not to mention the stylus are more expensive as well. Ive probably sent back 10 units to verifone for rma already this year and I have about 40 units rolled out. 10 on NCR Connected payments. Definitely want to have 10% extra in hot swap spares since Verifone takes 3 - 6 weeks for rma repair. At the end of the year I'll have close to 300 lanes running them, I'm hoping this is not a trend for us.
I'm looking at testing Ingenico units since we are moving to Index.