Well as reftool noted there is no one lens for all situation but with my style FA43 comes pretty darn close!
Anyway, halfway through and trying to asses my chosen lens... Hmmmm
50 is very useful on APSC IMO. 1.2 is super useful. I only wish it was A series. To be able to leave the lens in Av mnode and only change ISO & Ev as needed would be great. Coupled with K10D I need +1 Ev in Av mode when shooting wide open to get correct expsure. Other f stops need M mode obviusly. @ f1.4 I need to adjust + 1 stop from metering. By f2.8 is OK and @ f4 the stop down metering is pretty much spot on. @ f5.6 I need -0.5 stop by f8 -1 and comletely falls apart beyond (pretty much useless so I take reading at f4 and calculate).
MF at 1.2? Well there are easier things do. Ii started to practise focus bracketing (thanks these days for digital).
Other than that I confirmed and assured myself that the lens has the most buttery OOF of any of my lenses (yes 31 & 77 including) even when stopped down! Terrific colours and great contrast from f2 with very good sharpness and contrast at f1.4 and if focussed correctly fantastically usable at f1.2. There are some aberations but surprisingly nearly no sign of PF (very pleasant surprise compared to FA43).
As for my style? Pretty much the same but I'm getting more daring with people shots and more creative with other type shots.
In short these two weeks have been invaluable experience assuring me that selling this "old laughing lady" would have been major mistake!
Thanks stillshunter for this challenge and I hope I'll get the chance to repeat it with other lenses...
On a side note: I haven't shot other lenses since 1st of Sept