Seeing how buying new Mesa Boogie amps are next to impossible now in Europe (although it seems this is changing, some new shipments will be arriving soon in some retailers), this is where this plug-in comes and fills the void and what's great is that it's officially licensed by Mesa Boogie.
First of all I recommend both this plug-in and it's first expansion as well where you have access to the Dual and Triple Rectifier and other legendary Mesa Boogie amps. The second expansion however is in my opinion better, I had never heard of the Boogie 'California Tweed' and now I'm in love with it's rich clean tone, nor was I familiar with the 'Triple Crown', but it currently is my favorite hi-gain amp. Nearly every aspect of the amps are tweakable and seem like an accurate representation of the amps in a real setting. I would certainly recommend this.