For all the doomsaying about the future of film there are still a lot of film types to choose from whether slide, color neg, or black and white. You can spends $10/roll on "professional" film or $2-$3 on more consumer level stuff. Fuji Superia (400 & 800) falls on the lower end of the price spectrum, but in my opinion punches well above its weight. Superia is a premium-ish film in its own right. It slots about the base Fujicolor Color Negative film of which I could only find ISO 200 & 400 at B&H. To be honest, I didn't look too hard. Superia incorporates some fancy "4th layer technology" that I'll just let you look up later. From what I've seen Fuji uses it on the regular stuff too.
One of the reasons Superia is less expensive is because it comes in 24 exposure rolls- factor that in when you compare to more costly films that are 36exp. As many reviewers note it's rich and saturated colors. To me the color rendition is beautiful and sharpness is excellent. Even at ISO 800 it is still very fine and gives you the flexibility to push as your setting darkens. At about $12 for 4 rolls on Amazon or $3.50/roll on B&H, Fuji Superia is a film I think you should always have in stock. Its great for street photography and a great way to cut the cost of shooting film without cutting quality.
Here is a favorite from a roll I shot in Georgetown, DC. A homeless man stands at the entrance to an alley (I'm in the alley). I don't present my photography as a social commentary, but it has always struck me how many homeless people there are in DC's toniest neighborhood. I love this picture because it captures that dichotomy. A homeless man in the heart of cosmopolitan wealth- exposed brick, luxury cars, restaurants, trendy labels... At the time I just liked the colors.