Well, in order to recommed a good sleepingbag, it would help, if you told us, in which environment you would be using the sleeping bag.

Tempered or cold weather?
Are you sleeping in a tent or bivy bag under a tarp?
Wet surroundings or dry?
Is weight an issue?

There is a great difference in what to recommend, depending on the environment.

I have 3 bags, which I rotate from season to season. All three are Synthetic Fibre sleeping bags.
I prefer Syntetic Fibre to Down, since such one will provide warmth, even when wet.

This one for cold weather. Gonna take this on my autum trip the polar circle in Sweden:

http://www.carinthiashop.com/en/scripts/podrobnosti.php?IDZ=139

This one for summer and early autum here in Denmark

http://www.carinthiashop.com/en/scripts/podrobnosti.php?IDZ=196

This one for trips down south, or hot days here in DK:

Häglöfs Euro Lite.

Can't find a picture of it...