Some more information concerning Sabian cymbal
One of the brothers who own the Zildjian line disagreed with the style of cymbals being produced, so he broke away and formed his own company. Both companies use similar (but not exact) types of alloys in their cymbals.
The B8 series is the introductory line. These are made from sheet bronze, which lack the tonality and sustain of the 'professional' cymbals. They make great starter sets but you'll outgrow them in less than a year, and you'll have to buy the 'pro' quality gear. You may as well invest in the good stuff now and save your money in the long run.
Sabian also made a B8 Pro set which uses a better alloy, but it is still learning gear.
The AA series is made from brass and is hammered by a machine. The HH series is formed by machine and is set up by machine hammering, but the finishing touches are added by master craftsman who artfully tailor the sound of each unique cymbal.
The best way to buy Sabians is to go to a store and bring your own sticks. Try to play them in a quiet room. Thin crashes are explosive and fast, while the medium weights are more sustaining in tone.
I have always been able to find cymbals at 45-55% of the list price. I try to avoid buying them withoug hearing them, since all cymbals have different sound qualities.