Hi all,I have been reading as many threads as possible and finally see that (i think) the Zumo 550 is the sat nav update I need or is that want?.please help me confirm of rethink my purchase.I like to listen to music on the duller bits of a journey yet have the sat nav overide when instruction are given (my ipaq pda does this) can/does the Zumo do this?? I am not keen on blue tooth headsets as I understand quality is not good and they do allow for ear plugs, so would rather use in ear speakers unless someone can recommend better?I like to be able to re-plan on the go simply, the tom tom software on my ipaq allows me to view the map and set way points roadside, can/does the zumo allow this or must all planning be via a pc?I have a GSA screen and would like to mount it on the screen support bar where my TT mount is now does the supplied mounting in the box allow this?and is it powered via external socket or can the mount be hard wired to battery to overcome canbus issues?thanks in advance for any help and advice, OH and finally I have seen some prices but where is the best place to currently buy one?many thanks Bellyboy