Relatively new player here; I have fully A-rated and engineered Vulture, ASP Exp, iCourier, Python, Clipper, with the latest buy being a fully engineered and A-rated FDL sporting 4 efficient pulses and a long-range mod'd C4 PA with plasma slugs; currently my go-to combat ship. Great top speed and turn rate. All other modules are light-weight mod'd, get a bit over 20ly jump range; not not too shabby. The small tank is the real limitation, requires storing one SCB and hull reinforcement for a tank and scoop, but the ASP (44+ly) gets the duty for long range missions anyway. The FDL is this rookie's in-system (or one jump away) dedicated fighter.
Part of the current FDL preference for combat is the C4 PA, which is more of a challenge than my Vulture's ability to just melt stuff, but landing shots with the PA is the most satisfying thing I've done in ED. Has taking me through Expert and now half way through Master. Having 6 util slots is also a bonus for 2 boosters, plus KWS, chaff, and sinks (which the Python should have.
For my developing flying style in zero grav, the FDL is less forgiving in turns than the Vulture or iCourier (will stall and drift more if cranked/banked), but the FDL is (IMHO) anything but boring. I've been a flight sim fan since the mid-90s starting with Falcon 3.0 and have have flown many of the DCS aircraft, so dogfighting has always been my main point of interest.
Well worth a try, especially if you have another ship with the same class thruster that's already DD5-mod'd.
PS - Oh crap, the above Chieftain post has me checking available credits. Never ends....