I haven't heard much review wise about the ecoboosts but they seem pretty stout. I have a 2.0 in my fusion, and had a 3.5 V6 in my SHO and both were/are great engines.
Just make sure you check the vehicle history/keep up on maintenance.
2003 Redfire & Black V6. Full suspension, 8.8 w/ 4.10s, tuned. 4.3L stroker + turbo capable of 550 hp soon
DD: 2015 SHO PP, 12.87 @107 1/4 mile (1.8 60') on 93 octane tune/CAI only. SAE corrected: 369.4/451.4 on E20, full Bolt On