In early 2009, Jasmine International launched ADSL services under the '3BB' brand in major cities offering speeds up to 3 Mbit/s for 590 Baht. This prompted True Internet to expand their services to 8 Mbit/s from 5 Mbit/s and matched 3BB prices.
In mid 2009, 3BB offers minimum speed 4Mbit/s for 590 Baht and expand their services from 8Mbit/s to 10 Mbit/s 1,490 Baht / month, prompting True Internet to temporarily offer free upgrades for current 8Mbit/s users to 12 Mbit/s.
All of Maxnet's customers were also transferred to 3BB as part of the TT&T debt rehabilitation plan proposed by the debt holders.. As of October 2009, True offers speeds up to 16 Mbit/s.
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Jasmine International used to be joint with TT&T and operated under the name 'Maxnet'. Now operates under the name '3BB'.http://en.wikipedia.org/wiki/Internet_in_Thailand
As for paying online, I'd probably wait before going that route until they've had about a year longer to sort it out.
From what I've experienced and heard, this transition was not exactly seamless. Bills apparently were not sent out, then when they discovered this months later, instead of contacting their customers, as one might expect (elsewhere), they chose to cut off their service - the easy way to get them to the office to pay, I guess.
How many of us actually keep books on bills paid each month? And which ones did not come in any given month? Exactly.
I asked about paying online when I found myself in their office trying to re-connect my service. They themselves advised against this, saying basically that they're not "up to speed" on this (or anything else) yet.
Same apparently goes for paying elsewhere, like Lo-tut. (Although I personally haven't had any problems paying there.)
They said to come to their office and pay - "better". Which is, as usual, a bunch of teenagers with no responsible adult to be found, one of the most frustrating aspects of living here, IMO.
As I have an Internet-related business, and also download lots of torrents, and watch many streaming videos, I'm paying about THB 2100 / month for their "Business" plan, and get speeds something like this:

I've no idea if this would change much with another plan, but one thing I've learned after living here for a while, is not to change something that is working well enough. And I'm happy to pay another 1K/month just to keep things rolling.
Will leave it at that, as this is the "General UT Forum"; (know there's more related posts in the "Computers..." forum).