Ok, now I'm criticized because I said that PMDG, LES and IXEG are the best devs!! Let me explain why: If I download a real FCOM and I work by that book in my simulated plane from PMDG, LES or IXEG everything is working, that for me is as real as it get's, and that for me is the best!!! Now, I see that in XPX community, peoples are pleased by freeware planes, it doesn't matter if it has an FMC or if the systems are simulated, well, that's not me, I don't use freeware planes and I will never use. A wile back I've bought JAR A320 and SSG 747 from the .org, I've never used them because they lack system simulation and I'm not enjoying them; for example, if I press 1 fuel pump button on SSG 747, all of them are turning ON, that for me is a big no no, and never used it from that point, JAR A320 is much better, but again, FMGS is poorly simulated and for that reason I've never used it, those are two small examples in those planes, there are more!! Now, you see what I mean, I only fly planes that are simulated by the book, money are no problem, If the plane is simulated by the book I will pay every penny that the devs are asking for, and the devs that are actualy working by the book right now are LES, PMDG and IXEG, others will come, but for now only this 3.