Yea same here..no difference in reception or anything, just easier to cut out. Btw, did u know tmobile gives u a replacement SIM for free? I was really surprised since AT&T sells them for $30..they didn't ask any questions either, gave me a new SIM just like that
I think it depends on what tmobile store u go to because some employees are more lenient than others..if u tell them ur old SIM doesn't work properly then they should give u one for free anyways