Why Grading? In order for you to make an informed decision as to which issue to buy, I estimate what grade CGC (a recognized authority) would assign to the issue and back it up with my guarantee. Even if you are just buying casually, or for a gift, it is important that you have a good idea what you are getting. I don't generalize with "Very Good to Excellent" (as you can see that encompasses almost the whole grading scale).

NEW (SEALED) Unread new issue in either Factory Seal or Retailer seal (Newsstand editions sealed by the retailer to prevent reading at the store)
NEAR MINT(NM) (CGC 9.0 - 9.8) Looks new. No notable flaws. Very Light corner bumps are allowed. Minimal thumbing and Very light shelf wear is OK. No writing on covers. On stapled issues. no discoloration of staples.
VERY FINE (VF) (CGC 7.0 - 9.0) Issue looks new, but close inspection might reveal some minor flaws such as scuffing, or tiny creases on edges of cover. No more than 4 minor flaws.
FINE (F) (CGC 5.0 - 7.0) Very minor wear such as small creases on edge of cover or very minor scuffing, but obviously stored & handled with care. No tears, spine is tight, inside pages are clean & undamaged.
VERY GOOD + (VG +) (CGC 4.0 - 5.0) Minor wear from normal handling such as creasing on edges of cover, minor scuffmarks, one or two very small tears (less than half an inch) on cover edges -- any tears will be mentioned in description. Still, spine is tight and inside pages are clean and undamaged.
VERY GOOD (VG) (CGC 3.0 - 4.0) The average used magazine. Moderate scuff marks or creasing on cover, small tears (less than an inch) near edges. Spine may be slightly rolled from storage, but is still tight. Inside pages may have minor creasing in corners, but no real damage. Most are in this condition.
GOOD (G) (CGC 1.5 - 3.0) Complete magazine with moderate to heavy wear. Obviously has been read. All pages counted and attached (unless noted).