I think it depends what you want. If you want a faster road car the only way is to buy one with a more useable power curve, unfortunately moving away from NA. Its all about mid range and the dervs and hot hatches have it in spades so specifically for the road they are arguable 'better' cars for being quicker on the public roads.
The S54 is a great engine as it delivers 80% of torque from 2000rpm but it doesn't have a great deal of torque. Fantastic for an NA engine, but mid range with hot hatches they are quicker and they pull away until you start getting the S54 into its stride but by the time you hit 6800rpm or peak torque your doing much more than the legal limit even in second. But being used to having a hot hatch as well as the M they are certainly the poor relation and the front wheel drive nature and little engines is fun but its just nothing like the big NA rear wheel drive combinations.
So for everyday usable performance you can't beat the twin turbo engines like in the 35i, 235, 135 and new M3. But they are lack lustre, effortless, sound a bit lame and manufactured and the driver just isn't involved. The appeal of the NA engines is that you have to work for the performance, and when you do the feeling is immense and what your after!! So if you want a new car the only manufactures making NA engines in sportscars currently Merc AMG C63 but the new one is meant to rival BMs twin 6, Porsche Cayman/911, Ferrari and lamborghini. There are plenty of turbos and supers around.
But thats all relative, I like the old cars that don't have too many computer components keeping you on the road. A car that barks at you and tells you when your pushing it too far and that sensation comes through your seat rather than a flashing light on the dash therefore a car that isn't bothered about putting you in a hedge.
Cars on my list:
14-23k
BMW E46 M3 just such an awesome car, has everything you want in spades + 4 seats. Great looking car and fairly affordable. Pulls the heartstrings as it was my dads first M car lots of good memories.
BMW Z3M Coupe - would love one they are very niche just like the Z4M and thats the appeal
BMW Z4M Coupe - because its hard to beat might buy another
BMW E90 M3 - V8 with 4 doors perfect for carrying everything at warp speed love the look of the 4 door too and that V8 :wub:
BMW E63 M6 - I love the look and that engine!!! Also the interior is one of the nicest places to be. But scary if anything goes wrong.
Audi RS4 V8 - same as above but with a nicer more sporting interior
Porsche 996 Carrera 4S - might not be the best 911 but I love that wide body looks gorgeous, cheap (for a porsche), goes like stink and sounds amazing with the sports exhaust.
Bucket list £30-45+k (quite a way off for me)
BMW E46 M3 CSL - obvious. IMO one of the best cars ever made and would be in my forever garage.
997 Carrera S - Probably one of the best affordable sports/super cars available also because I love them, and hopefully my dad might sell me his
997 Turbo/S - again although the only turbo on the list I love them.
Audi R8 - I don't like the look of them neither the interior just doesn't seem special but it is a world class super car
Jag F type coupe - Gorgeous but unlikely to be <45k for a while
My plan is to buy a house first…. lol! Buy a cheap E46/E90 320D or R56 Mini Cooper S to commute with and then try and pick up an E46 M3 or Z3M Coupe depending whats available. Then in time buy a 997 Carrera 4s or S and I would be very content with that combo and sell the daily and buy the Mini Cooper S thats we've just taken delivery of at the end of its 3 year term.