With modern film technology, use whichever one you wish, they're all good.

The differences between brands (even supermarket/drugstore own brands) is largely one of personal preference: some provide more vivid colours which suit certain subjects but to some they look unrealistic, others have a more subdued colour but to some they look too dull. In practice you probably won't notice the difference as the final colours depend upon which company processes the film and prints the photos, the machines they use, the brand of photo paper, the individual human operator, and whether for economy reasons they've stretched the life of their processing chemicals longer than recommended.

What make a bigger difference is film speed. Slower speeds (lower ISO numbers) give finer image resolution but need longer exposures, faster films (higher ISO) allow faster shutter speeds or smaller aperture settings (or both) but give a less detailed image. But it's true that a modern ISO400 film isn't much worse than the ISO100 films were back in the early 1970's. Given the modest maximum aperture of the lens you have I'd recommend that you avoid using IS0100 film unless you know that you'll be shooting the roll in bright lighting conditions. ISO200 is your best all-rounder unless you have longer telephoto lenses in which case you'll find that ISO400 is a better choice.

You can also save a lot of money if you buy out of date film: if it's been stored in cool conditions it's usually good for at least a year after the expiry date, but if you wish to use slide (a.k.a. transparency) film then it's best to reduce that to no more than six months.

The biggest difference to image quality is you and your understanding of how to use the camera, and the single best investment you'll make will be a tripod and shutter release cable: used together you can eliminate camera shake and ensure that your photos are as sharp as possible. Even a small bean bag can be used instead of a tripod if there's something to rest it on.

In short, you'll only find "your" best film by using lots of it, regularly, and experimenting to find a good photo lab and then sticking with it for as long as they do a good job.

Good luck, and I hope that I've helped you. Please feel free to ask me for further clarification if anything I've written is not clear enough, and when you're happy with my answer please take a moment to rate my reply.