I say yes, I did it . Had my ZS Jan 2020 and ordered update Dec. and just got it Late June.
For me the interest rate is now 1/2 my original, equity was crazy so essential a big deposit luckily I did it when it was 2.5k grant so that helped also.
My new monthly payment is less , diff. in final payment is only 4-5k more.
Just on a cost per kwh I'm paying about 59 pounds less per kwh.
Final decision is can you get the current version with the Sunroof. I did used Chroley group, Daniel was very helpful, communicated and entire transaction was smooth. I glad I did not listen to local dealer, O would missed grant and gotten increase in price.
If it makes financial sense for you I say yes, the bigger battery, better infotainment is good. I charge at work once a week now but could probably go 1.5 week between charge.
Goodluck
@Gavla