Pretty much the same. Get on newegg's email promo list. They had the first one for $19.99 with free shipping last week using an email promo code. You have to register and it takes about 24 hours to process.
Frys.com had the antec 300 for $49.99 with free shipping, last time I checked. It's much larger and better overall than any of your rosewill cases. Newegg was higher for the 300. Frys in stores only has a raidmax atx case with 380w ps for only $19.99 on sale through tomorrow.
They're all pretty much the same with cosmetic variations. The first one has a slightly different drive cage. I agree with the others. You can do much better. You just have to sign up for vendor newsletters to get special promo codes, check prices regularly, and be patient.