I don't know when you're trying to get shots so it's not a fair question to answer. So I'll break down what I use and when. My results are for a full frame camera, so some of the focal lengths might not quite be as useful for you.
1. Most common: Tamron 28-75 f/2.8. This is comparable to your lens, though many will argue yours is capable of being sharper with better color rendition. This is a good range for full frame, though it might be a bit tight for a crop camera, not sure. On my crop camera I used a Tamrom 17-50 instead of the 28-75 and I adored that lens!
2. Capturing the scene: Canon 17-40 f/4. This lens is a bit wider, and makes for capturing entire scenes. I can get the entire family doing stuff, or if outdoors can make the photo much larger than just the subject. This lens also is great for indoors in close quarters, there's a minimal amount of distortion so it works well.
3. Outdoors: Canon 70-200 f/4 IS. This lens is great for getting nice up close and personal shots when running around out doors. It also allows for good tracking/motion shots with the IS. This lens is good for indoors if you're capturing real tight head/shoulders type portraits.
4. The Primes, 50 /1.4 and 85 / 1.8. These are both great for capturing posed photos indoors, or out, and can be great for getting good photos in low l ight that might not otherwise be possible. I stick mainly to the f/4 lenses, so my glass isn't the fastest for indoors, so that's why I suppliment with these two primes. On a crop sensor the 50 was my favored, but the 85 is now more used.