Totally agree. Unless you're pushing the car pretty hard, this is all you are likely to need for a good long time.
Take care of any clunks and noises, just because they can be safety concerns. After that, put on the best tires you can afford... you can't make a better investment in handling than that. Period. Continental DWS06 and Michelin Pilot Sports are favourites among many here and both are excellent. The all season versions are a little cheaper and longer lasting and likely all you need for a DD that doesn't see track days.
The full Spec B suspension + sway bars + endlinks + etc... I installed is awesome, but being totally honest, the difference between OEM stuff and all of that was probably less noticeable then when I got rid of the tired out Eagle Sport 2s and had some Conti's installed. Night and day difference in grip, compliance and noise....