I think a lot of tango purists really like the old stuff. To each his own, I guess.
Welcome to the forums, newbie.
You guess correctly!
I basically tango to just about anything.
BUT, nothing beats the purity, elegance, romance, and intimacy of a traditional Argentine Tango danced to the scratchy old stuff. There is a certain appeal to it that can only be explained once you get into dancing AT seriously.
The new arrangements sometimes lack depth, most especially the nuevo stuff... (just my opinion)
Here are a few of my favorite CD's from my collection. All ordered through Amazon, some were shipped from Argentina!
Francisco Canaro
http://www.amazon.com/Bailando-Tang...4074677-4417440?ie=UTF8&qid=1184269038&sr=8-3
Carlos Di Sarli
http://www.amazon.com/Instrumental-...4074677-4417440?ie=UTF8&qid=1184269038&sr=8-3
Juan D'Arienzo
http://www.amazon.com/Sus-Primeros-...4074677-4417440?ie=UTF8&qid=1184269038&sr=8-3
Osvaldo Pugliese
http://www.amazon.com/Instrumentale...4074677-4417440?ie=UTF8&qid=1184269038&sr=8-3
Anibal Troilo
http://www.amazon.com/Yo-Soy-el-Tan...4074677-4417440?ie=UTF8&qid=1184269038&sr=8-3
With these you have enough to host a small authentic milonga. All the selections contained are danceable.
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Other favorites:
Forever Tango Sountdtrack
http://www.amazon.com/Forever-Tango...4417440?ie=UTF8&s=music&qid=1184270172&sr=1-1
Modern orchestral arrangements of old classics. Some of the arrangements were written for performances, so when you dance to them they tend to throw you off if your musicality is not fast enough to pick it up... And I have danced a few tandas with the lady on the album cover (I just had to brag, sorry)

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TANGO "The movie soundtrack"
http://www.amazon.com/Tango-Origina...4074677-4417440?ie=UTF8&qid=1184270172&sr=1-1
Good sevection. Every collection's must have. 80% of the selections are very danceable to the traditional styles (e.g. Salon, milonguero, apillado, etc.)
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Otros Aires
http://www.amazon.com/Otros-Aires/d...4417440?ie=UTF8&s=music&qid=1184270431&sr=1-1
Modern licks infused and alternated with classic arrangements. Fun! Best danced to an athletic nuevo style tango. Good for showing off, not so for being "At one" with your partner.
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Narco Tango
http://www.amazon.com/Narco-Tango-C...4074677-4417440?ie=UTF8&qid=1184270431&sr=1-1
Earthy nuevo Tango music. Danceable, best suited to nuevo.
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Bajofondo Tango Club
http://www.amazon.com/Bajofondo-Tan...4074677-4417440?ie=UTF8&qid=1184270431&sr=1-1
REALLY fun album. Good to dance to, if your into the physical type of nuevo
Like the movie "Shall we dance?" This is where they got the tracks for the trailers and opening scenes from. Also, a facial creme commercial-"Monserrat"
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Gotan Project
http://www.amazon.com/Revancha-del-...4417440?ie=UTF8&s=music&qid=1184270840&sr=1-2
Like the movie "Shall we dance?" This is where they got the track for the [stylized "goofy-tango"] J-Lo/Gere number-"Santa Maria (Del Buen Ayre)"
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...and with that, I will stop rambling for now :rocker: