Best Multi Effects Unit

I have been using individual stomp boxes for a long time, and sometimes for recording I have dabbled with some effects plug ins.

I am kind of fed up with my individual stomp boxes now, especially with the constant issues with hum, dody cabloes.connections, power supply issues etc etc so I am thinking of getting amutil effects unit.

I have been checking out the POD HD500 following the thread James started but is there other comparable products that are as good if not better than this?

Opinions please...