ALL IN ALL... Nobody can really tell you if it's worth it or not.
It all comes down to the individual player, whether he or she likes smaller maps or bigger maps, vehicle maps or infantry maps...
Vanilla BC2's maps scale are larger compared to the maps in vietnam.
The weapons are a little more accurate in vietnam.
People die a little quicker in Vietnam normal mode compared to Vanilla normal mode.
Tanks and Choppers are alot easier to use..
Thats about it really... smaller maps, more accurate weapons, people die faster, vehicles are easy to use.....
Other than the up above...your really not going to know if Vietnam > Vanilla BC2 or the other way around UNTIL you actually try it.
If you can keep playing vanilla until BF3 comes out(it's around the corner and i am NOT excited about it(true story!lol)) than on the bright side.....you will have saved up $15 or more or less...
