FS:Grado SR-225i in mint condition. Less than 50 hours of use. Buttons have been removed for a more open sound, will be sent with phones. Don't have the original box but will be well packed-check my feedback for comments on my packing. PayPal fee and 2-Day USPS included in the asking price. PM me with any questions.
For Sale: FS:GRADO SR-225i
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The HE-400 will give you a bigger sound with more impact. I think the bass will also be a little stronger with the HE-400. You will need a good amp to crank rock or heavy metal with the HE-400. The Grado will need less power to go loud. Reading reviews of both phones on Head-Fi should also help.