In the Google.ca I was suggested with sibername.com for the .NET web hosting. I have looked through google and other SE and understand that they are good and everywhere accredited domain name registrar. What do you think they can be good in the webhosting?
Hope for your help.

Search in some hosting forums including this. Web hosting talk is another forum where you can find some good reviews. Definitely you will get comments from persons who are having direct experiences. Hope this helps.

For the .net/asp hosting I would prefer specialists - like aspnix.com. They provide cheapest windows deals I know and are reliable provider.

Since they provide only windows hosting, they havу many advantages over hosts which offer linux hosting as well.
Compare it with what you are asked about - and then decide what is better!

Good luck!

Never heard they offer web hosting. Domain name registration - yes. But if you have found that on their web site why don't give them a try and they decide?