I haven't watched it in a while. Looking back at S1, it was just as cheesy as pokemon, but I enjoyed it as a kid. S2 was pretty good, but I haven't seen it since I was maybe 6?
S3 is pretty much the pinnacle of Digimon, and the more promonant fond memories I have of the series. I even go back every so often to rewatch bits of it today.
S4/Frontier was kind of a joke when I saw it. But if anything, it aided (or the OP) in one of the most memorable YTPs around.
I don't know a thing about the next seasons or current seasons, I lost interest in them after Frontier. Apparently they recently did a fanservice episode where they showcased a few previous MCs to team up, like Tai and Takato. I keep on planning to watch it sometime, but I keep forgetting.
https://www.youtube.com/watch?v=rwbRWKZNdAU