P47D30/P51D/La7/190A8/190D9/SpitIX and Typh were tested. I found, surprisingly, P47 as only an average diver, P51/SpitIX/Typh were kings of the hill about getting out the dive with little or no trim at all (best of all being the typh by far). 190s needed a lot of trim nose up, D9 more than A series. La7 also needed lot of nose up trim (augering several times). About diving speed, it varied along the dive. SpitIX can stay with 190s at the initial stages, then 190s outdives (slowly) the SpitIX and then there was a "segment" where range kept stable. Once leveled and after some seconds of stalemate, D9 outrunned clearly and suddenly the SpitIX (as if the spit hit a brick wall). A8 and D9 had similar diving but A8 had better elevators to get out the dive, needed less nose up trim. All in all, the winner was the P51D. Curiously, we needed to change the orientation of the take off because P51D kept going uncontrolably to the left even before leaving the ground, crashing over'n over against the control tower or last fighter hangar.
Cant remember the fuel load of that test (probably 50%). It was done from the highest field (NW) of the DA.