Whats the best GPS SW for the Treo 700W?

[saclark1]

I already have 2 versions of PocketMap Navigator, from my old XV6600, which do not work with the Treo 700W. I have read about TomTom and Alk Co-Pilot 6 Live, but don't know which would be best., considering the skimpy amount of RAM on the 700W. I see that Alk has a promo that provides for a 50% off on the purchase of theirs, when returning my PM Navigator Discs. That makes it about $100.00 . Has anyone used COPilot on the Treo and/or can give me their recommendations? Thanks in advance for the help.