Hi, I have used both the manual focus bodies and auto focus bodies of Minolta extensively. You need to decide which one you're after, because they are two very different beasts.
The Maxxum 9 was the pinnacle of development in its day. Honestly, even the Nikon F6 really doesn't have anything on the Minolta Maxxum 9. Weatherproof sealing, all metal construction w/ 1/12000 max carbon fiber shutter, etc. Amazing sounding shutter really. And I've never seen a brighter viewfinder on a camera. However...it's big. heavy. screams PRO louder than you might want...and with the lenses matching up to Sony Alpha digital bodies, the AF Minolta lenses are no longer a bargain like they once were. You could easily get a Maxxum 7 with nearly all the capability of the 9 (plus some extras!) for half the price.
Now...if you want legendary feel, small ROKKOR primes with wonderful bokeh, smooth tonal transition, nearly Leica-ish quality...you want a Minolta manual focus body such as the XD-11 (XD/XD-7). Maybe even an X-700 for a back up body and for the TTL metering. For what it's worth, the X-500 (X-570) has some improvements over the X-700, and is usually even less money. What it lacks is the "P" mode. Whoop-de-de as we would say...do you need "P" mode?

Two resources I would check out:
www.rokkorfiles.com for the manual focus gear. Read the camera section thouroughly. These are top notch performers that were NOT cheap in their day. But...BARGAIN now! And the lenses...man, there is just not a better set of lenses for the money these days than ROKKORS.
Then I would take a look at
www.mhohner.de and check out the camera section and lens section on the left hand side of the page. It will take you to an entire (rather large) spread-sheet of the whole Minolta AF camera line, plus the new Sony digital AF line. You can see the difference. Auto everything, every whiz-bang feature imaginable...
Then decide if you want to go with the AF line or the MF line of Minolta...
And come back with your decision, and we will be more than happy to give our opinions!!!

On which one(s) you should buy!
Good luck and happy shooting. Long live Minolta gear and Kodak Film.
Jed