As mentioned in the Disclaimer, I am very active in the Facebook group Car Seats for the Littles (CSFTL, for short). I also happen to own the Chicco NextFit car seat. It's a very nice seat, and over the last four months since I've bought it I've learned quite a few tricks related to the proper usage of this seat.
One of the questions that gets asked often in CSFTL is "how do I do a seat belt install for the Chicco NextFit?" Now, I'll admit, there is a small learning curve with the NextFit seat belt install, as opposed to the LATCH install. However, once I figured it out, I actually find the seat belt install to be consistently easier and tighter than the LATCH install.