Whats the stock compresor of Mazda ba? Well for me, better to stick with an OEM compressor (not saying na bumili ka sa casa).. an aircon specialist told me that if you'll variate an OE compressor, it might be possible for some vehicles or yours, that their tubings might won't fit from a different compressor. Though it's possible, but you'll compromise w/ an additional expense to change those thingys (tubings etc.).

My compressor is deteriorating too, so in the future i'm opting to change from OE Sanden to Denso (surplus only).. kaso yun nga lang sabe saken na baka o hindi talaga magkatugma kung ibang brand, atsaka dagdag gastos pa sa ibang parts na papalitan. So di bale na lang siguro.. hehe...just my 5 cents. :D