Which unit for city use?

[fattony]

G'day. I know there's alot of comparisons around here and opinions on which are the best satnav/GPS units but I'm interested in what you think is the best option for my particular situation. There may be a system out there that is ideal for my needs. I'm doing a 4 month trip around Scandinavia and Eastern Europe this summer on a Yamaha Fazer, so there will be no off-road riding and I will have plenty of time so for most of my riding I don't mind using a compass and a European map book. I don't care much about which routes I take (though preferably not the motorways) or getting lost on back roads (half the adventure). What I would like a navigation system for is finding my way around towns and cities. Apart from this trip and a 2 week trip to Spain next year, I probably wont have any use for a sat-nav since after that i'll be selling my bike and moving back to Australia. I would probably use a GPS device for hiking from time to time, if i had one. The bike units are very expensive, esp for only using on one or 2 trips. Ideally I'd want a unit that included all Eastern European cities.
Ideas???? Opinions??
Tony