Having not seen the new one in person, I can’t say anything about perceived build quality or anything like that.
I have looked at the previous gen numerous times, almost convinced myself into a Deep Ocean Blue one, but got to thinking it would sit largely unused like my other two gassers.
If I were in the market for a gasser, the previous gen would 100% buy and not even worry about it. It’s built fairly solid (nothing new is built as well as older ones, it is what it is) and is a fine cooler I’m sure. The new one I would suspect is similar with a couple extra doodads.
The Weber Connect is actually not too bad, assuming it’s very similar to the version on my Smokefire. I’ve used it to monitor internal temps during longer cooks and it was just as accurate as my external monitor. I haven’t tried any of the apparent tutorials they offer but that’s aimed at newer users and I’ve been grilling for two decades +/-
I will say, if those are the ones with the side burner, word of caution: I have the side burner on my 2017 Spirit and it burns way too hot. I was highly disappointed; I had envisioned slowly warming up some beans or such while burgers and brats were on, and nope it’s not slow at all.
Basically, get one and don’t worry. The inserts and accessories they are coming out with for the new Genesis are cool and I’ll pick some up for my Smokefire. The storage cabinet on the side is awesome because grilling items can be hard to store as they are greasy. I wouldn’t hesitate to buy either one if I were in the market. It will last a long time, either one.
Let us know your choice.