Remote control for iPad?

Hi Guys,

Recently my 4G iPod touch dies and can't be restored (error 28).. instead of paying around $199 to replace it I am thinking about buying iPad.

My idea is that I will keep iPad in my backpack most of the time while on the road to and from work. Only the headphone (Sennheiser OMX980) will be hanging out of the backpack. My headphone has no remote control functionality so I will not be able to control the music. Is there any accessory that work like remote control for iPad (wirelessly)? Bluetooth headset is not an option since from my experience I feel sound quality is very much dropped.

Can you also advise if iPad sound quality is equal or better than 4G iPod touch?

Thanks in advance