So far, I only own 1 add-on for FSX given the short time since my upgrade, which is Just Flight’s A340-500/600 which to be honest, I’m not particularly happy with as it has a few issues. These include the MFD’s being blank in VC, but functioning in 2D Panel mode and no sound in the external views to name but two. Can’t say I’d recommend it.
Back to the point though, add on aircraft for FSX are a bit thin on the ground as it stands, although an absolute corker, Level-D’s awesome 767-300ER, was just recently patched for FSX compatibility. A few others like PMDG’s 737 NGX and 747X are also on the way too. But what I’d like to see are some decent 777 and A330 packages for FSX, but I’m not aware of any in the pipeline as it stands.
Level D has just released a FSX version of its mighty impressive 767-300
PMDG has announed a FSX version of its 747-400 and Queen of the Sky’s (Freighter Version) it is also developing a A320 plane for FSX only, which is due in the 18 months/2 years