The old Hobbycraft Avia makes into a decent model, even if it's starting to get a bit old. I added the SC 50 bomb rack with bombs out of another model as the kit gives you a drop tank, which is inaccurate. I also replaced the 20mm barrels with those from a Hasegawa Bf 109, as the kit supplied ones were far too thick. Decals came from Aeromaster, as I've had previous negative experiences with Hobbycraft decals, however, the fuselage band and the fin flash decals were not even close to fitting, so these were masked and painted. It really is time for a new mold 1/48 Avia.
I've always wanted to sit the 109 variants in a line showing the different engines going from the Kestrel through DBs to Jumos and finishing with the Merlin (or the other way around depending on your view of the timing).