I have experience with both analog (my dad’s #2) and my 3D. I like the programming capability that the digital provides over the analog, but that’s me. I am fine without the WiFi because I have seen the app/interface and I don’t think its worth the money, just my opinion. I could be wrong but I like the setup I have.
The digital programming can offer some cool ways to cook, but if you just want simple, the analog is excellent. My dad’s #2 was great when I put it through the ringer for my daughter’s grad party last year. It did great cooking the pork butts I served up and my #3d did wonders with multiple briskets going at the same time.
But, like Larry said, the extra money could be spent on a great thermometer- I like the functionality of the FireBoard thermos, and will get one at some point because I also use a Weber kettle for cooks as well. Add a fan to it and you can get some pretty solid cooks lazy q style (not Smokin-it lazy q, but close!)
Enjoy!