Hey! I'm going to be recording a blues band soon and they want a hammond B3 organ in one of their songs. Are there any good synths that would be worth it?

Thanks.

Anyone gonna rush out and buy a NEW B3 and Leslie?

What's the deal with Hammond Organs in general and the B3 in particular. Why are they revered as they are? What's the difference between the B3 and the M3. If you had an opportunity to pick up either at a good price, would you? Why?

I ask because I've been hearing a lot about these lately and I'm just wondering what's up with'em.

Thanks