High Speed Internet: What Can I Expect: Blackberry Vs. Huawei Usb Modem

I currently have internet through my apartment building, which absolutely sucks, and they charge 600B/month for it. It constantly is down, never meets the 2mb speed promised, and does not allow download of large files. My last place I used a wireless service called Value WiFi which was 500B for 4mb speed / unlimited.

I also have a Blackberry Bold 9700 which I can use as a tethered modem. I have an unlimited data plan on AIS Thai GSM. But, where I live, in Petchaburi soi 5, near Phaya Thai BTS, I only get EDGE speed, which is slower than the apartment internet. There is no AIS or 3BB hot spot close enough for me to connect into with the phone.

I will be here 3 more months and would like to have a system that can connect to two devices simultaneously.

I've read some posts recently about the huawei sim usb modem on

which says it can connect 5 devices and is fast on the river in bkk. Is this available at Pantip or MBK? Anyone knows about how much it costs and what kinds of sim / plans it can be used with? I previously used an aircard in the USA that fits in the slot on the side of the laptop (verizon) but am not familiar with the huawei MiFi modems.

There have also been posts about 3G unlimited net sim on TOT to use with it http://www.iec3g.com/web/page.php?page=pro_prepaid&prepaid=unlimitedsim

My question is: if I currently am only getting EDGE on my Blackberry, would that be the same speed I get in my area with any of these other devices? Or would other networks like TOT potentially be better?