Good bands similar to Wintersun?

[JasinElric]

These aren't clone bands, but they give a similar feel.

Mithotyn
Heathen Foray
King Of Asgard
Turisas

(I don't think Pagan Black Metal gets any better than Mithotyn, tbh)

 

[Loki Laufeyiarson]

Maybe check out Misanthropia?

 

[CronosBeyond]

May I recommend one of my projects?
Euphoreon: http://www.euphoreon.com/

We received pretty good reviews and were often compared to the first Wintersun album. Even though I think we're not doing quite the same music.