Thanks you, you're all to kind!
The Rafale (from Revell) and the X-29 (from Dragon) went like a dream. They have less parts, but are not to shy in the detail!
The Mig-17 (from MarkI Models) was detailed with p.e., needing some more trimming and adjusting, but also nothing problematic.
The S-37 (from Revell) is not as detailed as the Rafale, but also went with out problems.
The Mig-31 (from revell) add some problems with parts fitting, but my main complain is the lack of acuracy of some details.
The P.1214 (the model is from Anigrand), although quite basic, was a nice experience, allowing me to try out vac-forming a new canopy. All parts fited well after a bit of trimming.
They were all great fun.
Cheers