Much the same here. Spaded Le Malin and now working on Jeanne d’Arc as I research Emile Bertin. My first spawn has always been whatever is best for researching the next ship, so not a huge number of games in the earlier ships, but I have at least played them all.
Bourrasque. BR3.7. Decent reserve. Big guns (4 x 130 mm), good shells (HE & SAP), poor RoF, low muzzle velocity (725 m/s), poor turret traverse (common to all following DDs). Six torpedo tubes, 2 centre-line triple mounts, effective torpedoes with good range, although range not vital for close in DD ‘dogfights’ at 3.7. Two single-shot 37 mm secondaries… might scare the odd MTB, but no real anti-air effectiveness. Makes 33 kts: good enough.
Leopard. BR3.7. As Bourrasque, but you lose one triple TT mount and a couple kts of speed in exchange for 3 x 40 mm automatic cannon and 3 x 20 mm Oerlikons. More flexible, more ‘all round’ than Bourrasque, without sacrificing broadside firepower. Makes for an acceptable 3.7 line up.
Chacal. BR4.0. An improved Bourrasque: you gain a fifth 130/40 main gun and you can even bring it to bear sometimes; you push the speed up to almost 36 kts; and the 37 mm guns are replaced by a couple 75 mm. Perhaps it’s a useful 3rd spawn while you play the 2 Rank II DDs (BR4.3), but once Marceau (also 4.3) is researched you have a 3-ship 4.3 line up; using it as a 4.0 with the two 3.7s as back ups just means a bit less fun for the 3.7s, IMO. Save the crew training SL for now if you’re short of SL.
Vautour. BR4.3. Rather like Chacal, but with five 138.6/40 guns and 39 kts. Only 700 m/s muzzle velocity, but much improved RoF and the shells devastate in a way the 130 mm kind of promised but never quite delivered. The mediocre single 75 and four 37 mm are backed up by a couple twin 13.2 mgs and another two single mounts, so at least some short of close in defence from aircraft/MTBs. Fast and powerful v DDs; weak for its BR against air.
Milan. BR4.3. As Vautour but even faster at 42 kts. The single 75 mm gets replaced by a twin 37 mm, while other 37/13.2 guns are unchanged. One triple TT mount is replaced by two twin mounts, one on each beam, with excellent angles. The remaining centreline triple mount gives an extra 3 torps you can launch to either side. Even more speed, good torpedo layout IMO, this is my lead ship at 4.3.
Marceau. BR4.3. A war prize German DD in post-war layout, so 4 even bigger guns - 150 mm - eight German torpedoes and a ton of 40 mm Bofors plus some 20 mm. This ship solves any anti-air issues you might have in the other two 4.3s and the main guns remain effective, but perhaps not so much fun; you’ll notice the reduced RoF. A ‘mere’ 37 kts is still decent. Makes for a good 3-ship line up at 4.3.
Le Malin. BR4.7. The final DD and the logical conclusion to the Milan/Vautour line of development. Five 138.6/50 guns boost muzzle velocity to a decent 800 m/s; poor turret traverse is the only weakness remaining from those Rank I DDs. Quad Bofors plus a couple twin mounts and ten Oerlikon cannons finally provide the powerful AA previous French DDs lacked. The designers now ‘all in’ on the beam TT mounts, with a triple mounting each side giving great angles. Carries over the 42 kts from Milan. Nothing to dislike really… save the only other 4.7, for now, is the very different Jeanne d’Arc - but that’s not a DD… (not really a cruiser either.)
I don’t think any of these DDs are at the wrong BR one way or the other. Naturally they get stronger as the BR increases, but I also found they get more fun despite stronger opposition. Use the speed. Don’t sit around hiding behind islands; emerge from cover at speed in an unexpected direction; land some good salvoes, but don’t stop to ‘finish it off’; get behind the next island before the enemy can really respond or get the range. The high speed also allows you to cap and be back in cover before too many enemies target you. Most maps have enough islands on the flanks where these French DDs can really exploit their speed and heavy broadside.