Best mobile connection using 3G ??

Hi - I've read a couple of notes here about people suing a 3G USB connection to get into SL while on the move on a laptop.

I travel around the UK a lot, and some hotels charge £10-£15 a day for wifi access...so I want to investigate getting a 3G card which can plug into my USB. Some mobile providers do deals for 3Gb/mnth for £15.

Please can anyone shed any light on

1- approx data useage of SL... I've heard 100mb/hour - is that right?? (could get expensive)

2- what causes heaviest use... ? Presume just logging in one place and chat not too heavy on data downloading... and building things is heaviest??

2- which mobile network is best - I've always get best signal from Vodafone, but THREE and Tiscali have good offers.

cheers

UPDATE

So far I have found that in the Uk you can get a (Apple Mac compatible) USB mobile 3G card for free from Vodafone , with 3Gb a month downloads for £15. I just tried one on a work laptop, and the connection speed was stunning - as fast as out LAN ethernet!

Tiscali also do one - but not Mac compatible, so no use to me

THREE charge the same at £15 a month for 3GB but you pat £30 for the USB dongle. And Three's signals /coverage is not as good as Vodfone.


DATA USEAGE ... hard to tell, but I've heard some people say SL uses average 100Mb/hour, which allows 30 hours connection at 3Gb limit a month. OK for trips away from home.

I just used Vodafone 3G connection, continuously loading Youtube videos which used 13mb in 6 mins... that's 130Mb a minute - and must be way over what SL uses.

Well I've been using a vodafone 3G dongle in a Macbook for a couple of months...

UK cost is £15 for 3Gb download limit per month.


How many Mb /Gb of your allowance are used depends totally on what you're doing in SL... Like today when I was just staying in one place, doing some chatting and not much moving around, I did about 30Mb useage in over three hours!!!!

Other times it's closer to 100Mb an hour when building stuff and playing with shapes.

TK