I prefer the islandic, but the actual mainline for white is to play 3. D4 and give back the pawn, and follow with c4 with tempo.
Scandinavian Gambits
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yeah, im aware of the mainline. Infact im actually leaning towards the icelandic as well, because of the annoying transposition into the panov:
e4 d5 exd5 nf6 c4 c6 d4 cxd5 nc3
Which Gambit do you think is better?
Icelandic:
or: