In fact, both are good cars ! However, it is true also Naza and Proton have almost same quality of service center. Both are not good indeed.  For me, I opt for Inspira.  I think if any problem and Proton cannot solve it, at least I can find for Mitsubishi SC and I have peace of mind.

For forte, there are too much of electronic stuff, I think Naza (at least for now) still have of good technician to solve it.

For resell value, not one can predict Forte, but, previous resell value of Korean car is terrible bad.