Fujifilm Superia Xtra 400 is my favourite all-purpose negative. Apparently, the NPS pro-stock is actually aged Superia. So technically you could buy a whole lot of Superia, age it yourself, and it becomes NPS.
Like wine?

Store a few years very shiok :bsmilie: (no, I don't store any myself)
Superia is not bad, I found another one - DNG Centuria 200. Very nice colors for a negative film. Cheap too, but not as widely available as Superia. Look for a Konica lab.
My other favorites for B&W:
Ilford Delta 100/400 :lovegrin:
Kodak Plus-X: hard to get in SG but I love the tonality, white whites, black blacks and great grays you get from this one
Ilford Pan 400, Pan 100: great 'economy' choices. If you are just starting out use the Pan films, they can deliver very decent quality and they are amongst the most affordable films. And it's hard to go wrong with Ilford
Kodak Tri-X: Some love it, some hate it, I am not particularly fond of it but it's cheap and can be fed to my Holga. Expose at EI200 and pull one stop and it looks much nicer.
Color neg - I don't really like color negs but shoot them occasionally
Fuji Reala - expensive but one of the best available
DNG Centuria - nice saturation, nice blues, cheap
Kodak Pro160 - cheap 'economy' film that works great. Supposedly (can't confirm) rebadged Portra160VC
Fuji 160C, 160S - cheapest neg film in medium format out there. Used to feed my Holga
Slide film -
Provia 100F - awesome
Velvia 100 - awesome
Velvia 50 - awesome
With Fuji so good you don't need to worry about anything else.. just go for Provia/Velvia and never look back.
And if you really want a treat, forget 35mm film. Shoot medium format on a proper camera* and experience the power!!
(* sorry Holga fans.. I have a Holga and I really like it, but if you want to see 120 film at its best delivering SHARP 30+ megapixel scans, you definitely want a good medium format camera)