I use it and find it just as good as FSX with add-ons. Not better but just as good. LM states that version 2 will be directx 11 compatible so that will be a big plus. Other comments that I have heard is that P3D is better on marginal hardware than FSX. When I first tried it, I found that it was worse all they way around but after setting it up like I did FSX, I was pleasantly surprised.
I7 3770K @ 4.73ghz Asus Sabertooth Z77 16G G.Skill 1600 7-8-7-24 2T EVGAGTX680 Corsair 1000W PSU 2 - 2 - 256G OCZ Vector SSD - OS & P3D HAF 942 - Corsiar H100i Liquid Cooler W7 64 Home Premium.