So much Bach, where do I start?

Try a recording of the Brandenburg Concertos (Concerti). It'll have what you like. Look for an excellent ensemble and excellent conductor. A very fine recording (though there may certainly be better) is of Benjamin Britten conducting the English Chamber Orchestra. It's a two CD set that's usually found for a bargain price. Excellent musicians though -you'll like it.

Everyone should have a set of the Brandenburg Concertos. Modern recording, but then again do you prefer modern or original instruments? There are two modern recorded original instrument recordings out currently. One by Trevor Pinnock and the other the Boston Baroque/Perlmann. If you like modern instruments then look for Neville Marriner and the Academy of St. Martin in the Fields.

For voices Bach's cantatas are a good bet. There are hundreds of these. Other than the above artist look for John Elliot Gardiner, Helmut Rilling, and Ton Koopman. There is also the B Minor Mass, St. John Passion, St. Matthew Passion. It you want an overdose of Bach, Helmut Rilling is recording all of Bach's works in a mega CD set, The Complete Works of Bach. It will be hundreds of CDs. (Can be purchased in partial sets.)

I agree with Sugarbrie, particularly on the Pinnock recommendation for the Brandenburgs, my favorite for its vitality. Rilling's recordings are on the Hanssler label, pretty well recorded and fine interpretations. I suggest you get the Magnificat, an excellent vocal piece, and if you get adventurous, the Mass in B Minor, the toughest but most rewarding piece of music I've ever sung. The John Elliot Gardiner version of this piece is very good, on Archiv, though a little shrill at times (but then again, that's what Baroque trumpets sometimes sound like); I like it better than the Perlman on Telarc for interpretation, Telarc for sonics. Finally, try the four orchestral suites, plenty of variety within their movements; any of the above conductors mentioned by Sugarbrie probably has a good recording. Enjoy!