DC++ is a nice feature. i wish all ISPs offered this .
ontopic: getting 1 mbps on 5 mbps is pure bullshit! according to trai they should at any time provide 80% of given speed, which is not being given in you're case. Call the CC and warn tham that if they don't provide advt speed, you'll complain to Govt
Once you have DC++ then 1 Mbps or 10 Mbps does not matter ...because you will have terabytes of stuff on DC++ which will be accessible at 100 Mbps
I was lucky to take this 10 Mbps plan during the promotional price offer (6k for 1 year - 10 Mbps plan)
But beware - like all high speed plans - it will not give 10 Mbps "Always" (you can try quoting 80% TRAI ruling - but i doubt it will change anything anywhere)