Acoustic guitar: advices on microphone

What about the AKG C214? Could get one for a good price. (although the AT4033 is very tempting because it's also a great mic for vocals)
 
If the Oktavas are at the top of your budget, that's what I would get. I don't think you're going to do better than that until you spend more. I would definitely pick SDC over ribbon, as well. The Oktavas don't have as much "air" as I like in a mic, but this doesn't manifest itself on acoustic usually.

MXL 990. Place it between the 12th - 15th fret, the capsule off-axis towards the sound hole. You will NOT be disappointed. ;)

Edit: The distance would depend on how much low-end you want, and how much your guitar produces. Keep it generally close.

Off-axis towards the sound hole? You mean off-axis in regards to the sound hole, or you mean pointing at the sound hole?
 
shit i forgot to mention i modded my mk012s its just been a while so i forgot. just simple recommended parts upgrades like higher quality caps to make them less brittle i use them as my overheads on drums and i love them. i think i spent 400 on the pair and then 100 for all the parts in a kit but i didnt end up using them all. once again good luck mic hunting and also buy a new acoustic if yours sucks. all the mics in the world wont make up for what the guitar doesnt have.

http://www.takamine.com/archive/acoustic_electric/eg440c-strq

This is what was used in the clip you heard