I have been using Link3 for a few years now but after experiencing drastic fall in their service in recent times I have finally decided to move on to a new ISP. So far I have come across the following options :

1. KS Network
2. Dhaka Fiber Net
3. DOT Internet

BDIX support for torrents and YouTube is a must and I don't play online at all. Also I would need a real ip as shared ip sucks big-time. The maximum I am willing to pay is 1500 BDT. Based on my budget I thought DOT's Diamond package of 4 Mbps is suitable for me but I have no knowledge of their service.

Kindly suggest me an ISP with minimal downtime and stable connectivity. If you have any other options beside the ones I have stated then feel free to share that info.