Welcome back 🖐
I think the main thing that's changed in the last 10 years is the engineering and manufacturing has improved to a point where even budget guns work well enough for general game days.
You don't need to spend a fortune to get a decent metal body and accurate enough AEG. (Of course looking for perfection gives diminishing returns)
Good budget makes include: CYMA, JG, Double Eagle, Specna Arms
I agree with Rostok.
Rent for 3 games. Yes its a pain but you'll get to try the latest budget guns to see what they're like and see what other people have to help you decide what to get.
Don't get a Co2 pistol for games. Many sites don't allow them as they're often too hot. (They're a pain to use as well) TM plastic slide pistols work very well in Winter or you can get Red/Black gas for metal slide pistols in cold temps.