lelahel, for V30s i have a 4X12 recto, stiletto and a 2X12 roadster. Love em all, but most people here you will find prefer the recto over the stiletto. I tend to agree when it comes to using them with 5150s and rectos. With an amp such as the mark V i prefer the stiletto because it sounds more "organic" to me. But if i want the mark V to sound a bit less smooth and a bit more brutal then i use the recto cab. so im fine with both cabs for that amp though everytime i switch to the stiletto i get this "aahh" reaction haha.
However take my opinion with a grain of salt as i am still constantly experimenting and dont have as much experience as the other guys in here.
Bottom line if you can choose between the two grab the recto it would be your "safest" bet.
gluck