The most recent issue of SWAT magazine did a review of a Kreb's Custom AK-74 clone in 5.45. It was 2.5 MOA accurate, abouts, if that means anythign to you. The 5.45 guns certainly do better than the 7.62x39 guns, according to most. Don't know about the .308 guns.
The VEPR IIs are heavier; the 20" guns weigh in a 9lbs empty, whereas the 16" guns are 8.5.
The ones based on Saiga receivers are going to be lighter, being stamped.
5.45 ammo is anything but expensive. Everywhere I've seen it it's been dirt cheap; usually less than a hundred bucks for a thousand rounds.
AK-74 mags are abundant and very inexpensive, due to there being less demand for them.
For huting, though, you'd be better off with one of the .308 AKs. The VEPR, VEPR II, or Saiga .308. None have magazines that hold more than 10 rounds. Saiga mags hold eight (but can be easily modified to hold ten), and VEPR mags hold 5 and 10 rounds. The downside to the .308 VEPR is that Robinson recently raised the prices on the mags; $40 abouts for a five or ten round magazine! For that money you could get used M14 magazines, should you choose to have somebody like Kreb's convert it to take those magazines.
Be warned on the mag conversions, though. Reliability isn't always 100% with those.