3G Data Only SIM in Europe

[amlothi]

I did some searching but couldn't find exactly what I'm looking for. I have the European version of the HTC Desire, but I want to buy a SIM card for data while traveling for about a month. Will be in 6 different countries.

What is the best provider / service to purchase? Do any of them offer those little dongles that I can pull open and put the card into my phone?

Don't really foresee a need for calling - if absolutely necessary, I'll use IP phone. Primarily concerned with having a cheap and reliable net connection.

I realize internet cafes or public wifi are an option. That's my backup plan. I'm hoping there's a 3G option reasonably priced.

 

[jeremy_inc]

I don't think there are any providers that work over multiple networks cheaply, you always end up incurring roaming charges

But if you find anything you should let me know as would be interested in such a thing too

 

[SUroot]

But in case some networks are cheaper,than others, might you want to mention which countries you're visiting???