If you want something more collectible (basing this as a selection for collection- not choice as a shooter), keep your eyes open for an M91.
You need to educate yourself a bit here (no different than any other military surplus collectible) as there are a lot of "mixmasters" out there, and while that doesn't necessarily mean that it would be undesirable- any changes from original configuration (including subtleties like a stock that has been sanded) do affect value.
The M91/30 is one of the most prolific rifles ever produced, IMO the vast majority of them are not "collectible" simply due to the sheer numbers of them.
There are two sites you need to become familiar with:
7.62x54r.net
http://forums.gunboards.com/forumdisplay.php?3-The-Collector-s-Forum-Mosin-Nagant-HQ
Far as the M39's from Classic...
If you're building a Mosin collection, best start with that one because once those are gone, good luck finding them for that price.
These are the same rifles that have been for sale for
decades by Pat Burns, and before Classic purchased the remainder of the Burns collection they were available for less direct from Pat. Absolutely collectible, but the increase in cost (not value, IMO) is Classic's marketing glitz. Model 12 is certainly entitled to his opinion, mine is that milsurps in general have already entered "bubble" territory- and the belief he has, that prices will continue to increase exponentially- is what has been driving the herd mentality on this.
We'll know five, or ten, years from now who was right.