Depending upon whether you are primarily interested in a shooter or a collector might effect your choice of rifle as well. For instance, rifles that have been arsenal refurbished might be a better deal for a milsurp shooter, while a more serious collector will search harder and pay more for an unaltered original, even if it has a less attractive finish or more stamped parts from wartime production.
If you are after Enfields, an FTR (Factory Through Repair) rifle such as a #4mk1/2 or #4mk1/3 might have less appeal to a collector, but it would also have the benefit of the finest click adjustable sight available, stamped barrel bands replaced with milled ones, a possible refinish and perhaps having had the headspace checked and a new bolthead added during the rearsennalling (note the qualifiers that have been mentioned in previous posts).
OTHOH, while the rifles with the worst barrels might have been discarded or fitted with a new barrel, many factory refurbs among the Russian guns or Russian Capture Mausers will still show some effects of corrossive ammo use, so it is still worth asking about bore condition or the presence of a counter-bore. Even then your chances of a decent shooting gun should be a bit better with the refurbs.
Another point. Due to importing regulations many of the milsurps that come to us from the US will have importer's stamps on them. That might not be a problem for an arsenal refurbed MN 91/30 intended as a shooter, but it does not hurt to look for similar rifles from P&S, Tradeex, Marstar or other Canadian sources that lack such stampings. From a collector's standpoint they are undesirable.
Good Luck!
Frank