I think Kwhit wins this deal by a fair margin. Marshall is a rookie and playing behind a young PG. Vesely showed nothing last year and I never saw what any of the draftniks saw in him. Unless those picks are in the top 5 I can't see them being more valuable than a 26 year old 14PPG, 9.5 RPG, 1 BPG, 2.5 APG, 54% FG%, 76% FT% big man that is just starting to come into his own.
Those stats, over the next 7 years, could be 10-20% lower than what Horford actually puts up as he enters his prime..