Sounds like you may have already made up your mind, but I would highly suggest checking out Cloud9's landclass products. I think they are much better in most all of the U.S. except the SW desert areas (where I use SceneryTech), and they are much better in Europe....IMO.
Landclass is 'cheap', I have them all (commercial), and I always come back to Cloud9 for most all my locations I fly in.
Just my opinion.:mixedsmi: