What can you guys tell me about these microphones for a starter? I have already ordered my SM57 on ebay, and now I am going to order my mbox2. I have two options: -with my academic discount I can get the mbox I want for $350 on sweetwater, just the mbox2 and the protools software with plugins. -on musicians friend I can pay $450 with no discount, BUT it has a $40 mail in rebate and comes with the two microphones mentioned above as free gifts with cases, and shockmounts. Are these mics worth paying $60 more for to get for free?