If I had to choose between the two I'd take Galchenyuk.
EDIT: I suppose that should probably go without saying but considering all the hype around Gallagher last season, you have to wonder how many people might actually disagree with that.
- Jeffmt
Galchenyuk really came on in the last month of the season along with Eller when guys like Plekanec, DD and Ryder went AWOL. put up some impressive numbers for a 19 year old in very limited (and sheltered, admittedly) minutes.
as for moving forward, it's not even close. Gallagher has the potential to be a 30-30 guy if he can stay healthy and productive for 82 games at this level. Galchenyuk though, is just on another level skill-wise. he has the potential to be an 80-90 point top-line centre. he's much bigger and stronger too. both are gems but IMO will be on different levels in a year and a half.