Again, a lot of that stuff just isn't necessary for people who aren't trying to be competitive or just look at corner carving as a hobby.
I see a lot of people on this forum asking questions like "I lowered my car, my stock shocks suck, what's a good replacement?" And instead of saying "get some Konis or Bilsteins since you don't race your car," a bunch of suspension snobs start shouting "YOU MUST SPEND THOUSANDS OF DOLLARS ON COIL-OVERS!!!!1!!1!!!ONE!"
And that is a HUGE waste of money for a lot of people.
Granted, the amount of autocrossing I do, I should have coil-overs. But I've also seen people who have the same setup as me kick complete ass on a set of 305 A6s.
I agree with your sentiments completely. However, OP has stated that his car is not daily driven, and he wants the best handling option for the money.
Ground Control Coilovers - $1600
Includes shortened struts and shocks, new bump stops, caster/camber platesm and new rear shock mounts. You can choose your valving and your spring rates. If memory serves Whiskey11 is running this setup. You have all the advantages of a coilover system, easy to pick new springs at your whim, and able to corner balance etc. I believe you can get 440/250 springs with the kit.
Koni Struts and Shocks - $770 is the best deal I can find.
Maximum Motorsports Caster/Camber Plates - $330
Steeda Ultralite Springs - $265
Total - $1365
If you add the FRPP Bumpstops that will put you up to $1400
Here you get 195/175 springs and some good solid dampers.
Vorshlag Bilstein StreetPro Kit - $1500
Includes non-adjustable Bilstein dampers, and your choice of Eibach, Bilsteing, or FRPP lowering springs. All springs in the realm, or in spitting distance of 200lbs/in.
Now, if the car is going to be driven on the street a lot, and the streets in your area are shitty, then it is not very straightforward on how to proceed. If, however, your two criteria are budget/performance, then it seems clear to me which setup to choose.