I live in beirut and I am subscribed with IDM and this is my feedback :
Speed: the speed is really what I paid for, I have a 256k and it doubles after 8:00 PM to become 512k and I download using Internet Download Manager and I get a speed of 29-33 KB/s during the day and 60-70 KB/s during the night, no matter when I download I get those high speeds and this is what kept me with IDM, they didn't lie about the download speed and it is very cool.
Quota: my 256k has a 3GB up and 3GB down and what is nice with IDM is that it is cumulative in other words if you spare some unused traffic it will be added to your account the next month (I have a prepaid cards account) what I mean if this month I used 2GB download out of 3GB the next month I will have 4GB of download quota but if you don't use your internet so often your quota will be accumulated to a maximum of 9GB up and 9GB down. this is pic shows what I mean :
Unlimited night traffic: it's great and of course you can download anything for free during the night, after 11:00 any traffic you consume is not counted I usually does windows and softwares updates after 11:00 and of course make all my downloads at night and keep my PC on Downloading overnight, I consume 6-9 GB during the night download monthly and once I have reached 13GB of download one month but they never called me for abuse, maybe because in my area no one abuses the traffic except me :P so it might be affordable for them.
Latencies: it was awefull in the past 600-700 ms and suddenly it became 190-220 ms during 2 months before the lebanese elections 2009 and now the ping sucks again it is 450-500 ms at the moment.
Support: their support is good and they answer my calls 60% percent of the times.
PS: all what I said my differ in your area.