I think you guys should definitely try them!!!
pietcux, I guess since you have the Sig DJ/Sig Pro combo that you'd probably not stick with them though. As a pure basshead headphone, I preferred the Sig DJs over the SRH1540s. The Sig Pro would probably be a close call, but overall enjoyment of the Shure's for the money is really "up-there"!! I only sold the 1540s because they leaked (with their original Alcantara pads, never put the Alpha Pads...) and because I thought the Alpha Dogs did mostly everything better (with the exception of bass quantity). But as per my review, these are fun and enjoyable headphones.