Can I just point out that you can't actually get Fuji Reala in 35mm anymore.
For colour neg, the best stuff really is Kodak Portra 160 or 400, their the latest colour neg films on the market and are frankly amazing in terms of grain, dynamic range , latitude (hardly any difference in image quality if exposing from -2 to +3 stops with normal processing) and just general quality although you do have to pay the price for that of course! When its a bit sunnier you might also want to try Kodak Ektar 100, it gives fantastic saturated pictures (although to get the effect best you need good exposure as underexposure sends it more blue and overexposure even more saturated).
For B&W I would initially just have a go with some Ilford XP2 Super or Kodak BW400CN as their more easily and more cheaply processed (they are B&W but actually special colour neg films so their processable in about every lab around) than proper B&W as so few high street labs have B&W processing these days; for the best processing though mail order is the way forward, look at the stickied thread at the top of the page.
Sam