Let's think about this for a second...
BF:1942 - great success, I like. Especially the Desert Combat mod. This game was fucking incredible for its time. Truly revolutionary.
BF:Vietnam - some pretty massive issues, but... I like.
BF:2 - Was great until the expansion packs came in & completely glitched everything, I like.
BF:2142 - warmed up to it. Was actually pretty good once I got over the fact it was so different in gameplay.
BF:2MC - only played SP, didn't have internet at the time.
BF:BC - shittiest game of the lot, yet somehow the one I'm most fond of. Got so many things right that subsequent BF's fucked up.
BF:BC2 - crazy issues to start with, slowly got better, but not a lot.
BF:3 - royal fuck up.
BF:4 - another royal fuck up. Apparently it's better now, but I wouldn't know, my disc flew about 4 houses down one afternoon & I never saw it again... that said I was given another from a friend, I think it's entered my PS4 twice.
BF:Hardline - meh.
BF:Battlefront - technically not a BF game, but let's be honest, it really was. Equally fucked as all other BF titles to date.
BF:1... ...hmmm, I'm not gonna be a day one gamer on this bad boy... but fuck (not to be confused with butt fuck) it looks good (mind you, so did every other BF title).