IMHO I don't see enough difference in the A7 over a Tikka. I believe the A7 still has plastic parts which is what I don't like about the Tikka. They both have the same barrels as the Tikka has as good a barrel as any current Sako.
What I do like about the A7 is the built in weaver mount. I also like the tapered dovetail of the regular Sako mount but there are fewer choices in rings. The two piece Sako Optilock mounts are extremely heavy, especially if wanting to us them on one of the lighter rifles like the Finnlight. The one piece Optilock ringmount is an excellent mount but will only fit scopes with less than a 50mm objective. Leupold makes a ringmount for Sako but it works best with longer tubed scopes or when used on the short action guns. The Leupold ringmount won't catch to tighten until it is more than half way down the tapered dovetail.
All the above are nit picky things but sometimes important. Every Sako I have ever shot was accurate and well made. PM me sometime if you want to discuss details. I would be happy to give you a longer critique of the Sako's I have owned.