i dont really see anything special about irshell, theres not really any major advantages of using it. im pretty sure its an xmb replacement, but offers nothing else. atleast with xboxs, the replacement dashboards offered plenty more. id say just stick with custom firmware and a custom xmb (3.03 OE-C is the best for that now). i have a custom full-res background, matching waves, custom icons, custom font. etc etc.