Thank you Sall!
Both kits are Mirage V. PJ Production released first in 2004 a resin kit that is very nice and finely molded - but, of course, in resin! So, sales are not comparable with injected kits... And this year, thanks to a partnership with High Planes from Australia, PJ released an injected Mirage V. Better sales to come, but I must say I prefer the resin kit...
Martin Baker 4 were used until the 80's then progressively replaced by MB10. The two aircrafts I will build are from the 80's, but for the Mirage V BR the seat will still be an MB4 (seta not replaced yet by the MB10)
For what concerns PJ Production kits, there is also a Mirage III in resin (and a biplace one too) but an injected Mirage III will be available in june.