Spey Lines

[Yaffle]

Thanks to the advise of Uncle Barry, my strongest consideration for a line is a short belly.
However I do have more questions:
Are there some spey line brands better than others? What would you spey guys suggest?
If there are many good brands is there certain brands I might want to stay away from?

Also, since I've never done the spey casting/fishing before, I would like to know if any of you fish dries and nymphs as well as streamers when fishing spey rods?

Any help will be appreciated. I will around get to buying a casting dvd also.

Thanks: Grant