Whichever. I don't play online.
But might have to start to.
I stopped since 5 years and it feeled less frustrating and better to play.
Not at all the same as playing with your friend, no human contact etc. but in terms of gameplay you can't say that there's no variety online. Any AI/Cpu can't reproduce it, but AI is more able to reproduce how a full team of pro plays with a certain logic and a tactic/consign/way to play (i've saw some players used completely opposite to their playing style) well, it's my opinion or more point of view.
But offline is first, less frustrating and putting on your nerves against trolls players you can't even tell "play correctly please".
Also one big thing, it's less annoying when your start : as you got to get sometimes from the 10 to the the 4th 3rd or 2nd Division depending your own level to get a at least bit of opposition as players, especially if you don't buy it at launch is long and annoying. (CPU > just choose your difficulty and plug and play).
Scoring tons of goal vs newbies is not amusing, you feels like if you were training on Very Easy, well some rage quit after 3-0 in the first 20 minutes (better... but still).
And 1st division is like Esports players using all the games flaws. Let's say i got 50/50 fun on Fifa online from the 09 to the 16, and a very small bit the 17 before selling it.
I talk about my Fifa experience, but i'm 99% sure it's the same on PES. I also think, if they've got for the first time in Konami's series, good servers, that i will probably take a look too. It's not that i hate it, but i NEVER played online random games on PES : Only one tournament on PES6 360, with Ligue 1 (i gotted Lorient lol, wasn't easy)
Edit: About UFL/Strikerz, their stadiums ldoesn't look better at all than Fox or even Ignite or Frosbite (i really want to say worste... But i didn't remind every presentation stadiums neither lol) Colors are basic, lighting is basic. I don't get you all, where it's "next-gen"? To me it's looking just acceptable.
BUT even if it's online only, at least there's no sign of future bad gameplay like there's in Goalz, it's still an enigm (like absolute zero assistance in Defense, when you will got 10 players to control, and often 4-6 in defense... I don't think any other probable game/except the one who Kurt was inspired/ will go with that choice)