Thanks James,
As said the Boomerang is the one by Akemi, with textures by Morton. The desert textures are VOZ_1.8 (which is currently available on Flightsim.com again) and the scenery is the FDG2 scenery which came with the donationware Corsair (now freeeware).
The Macchi's are both MC.202 Folgores by Manuele Villa (although different sub-types). And again the desert textures came with VOZ.
Personally I think the Folgores and Veltros were among the best looking aircraft of WWII. The models by Manuele are absolutely stunning.
Cheers,
Huub