Thanks for the help so far. I'm glad no one has flamed me for anything, at least yet.
I'll just go through what you said, one by one:
Joint Operations: Typhoon Rising -- potato28 says it sucks, and reviews for it look generally "average".
Day of Defeat: Source -- Actually, I probably am going to buy this one very soon. I do absolutely think it's awesome from what I've played of it (not too much), and it's not expensive. However, it's not really like BF2.
BF1942/Vietnam -- I downloaded and played all the demos of BF1942, and after playing BF2, it just feels like a massive backpedal. Everything is just "worse" in BF1942 when compared to BF2. I haven't played BFV since there are no demos of it, but it's probably similar to BF1942. In fact, most reviews say it's worse, and the fact that there is no demo is a little suspicious.
Wolfenstein: Enemy Territory -- Great for being free, but it doesn't have the scale of BF2. As for Enemy Territory: Quake Wars, I'd like to consider this one, but I don't like the whole "alien/monster"-looking thing, and this one seems more BF2142 than BF2.
Still, though, thanks for the suggestions, and I'm still looking for more!