Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: I have just purchased a Canon Rebel T5i. Will the 580EX II work with this?
Document: I purchased the flash a couple of year ago and really like it.Very interesting mode  is stroboscopic flash. In this mode, the speedlight fires a series of flashes as setup in the menu. With this flash you can be very creative.My  580EX II flash recycles much faster than previous models I had. I try not to use alkalines - NiMH batteries save me lots of money and work better.I love the wireless capability of the  flash.
Canon Speedlite 580EX II Flash for Canon EOS Digital SLR CamerasI use this flash on my Canon EOS Rebel XSi Digital SLR Camera. It makes all the difference in the world! I am not a professional photographer, just a wannabe. I thought this flash would be really intimidating- but it is easy to use. You definitely get what you pay for here. AWESOME AWESOME flash.
I purchased the Canon 580EX II and found it did all it said it would do. I am extremely happy with it. I recommend it highly.
I own more than one Canon 580EX II flash. They work well both on-camera and off-camera. I use them mounted on my Canon 7D and the 5D. I have bounced them off of umbrellas; shot through soft boxes; used several of them at the same time; and they worked as promised. The learning curve is a little high only because one has to learn what all of the little symbols means and which settings do what.
The 580EX II speedlite is the top end external flash for canon and should be.I purchased it mainly for ettl fill-in flash. Fill-in flash in a bright sunny day is very difficult under any circumstances with any camera or flash unit. The 580EX does a wonderful job and is difficult to see any "overflash".You do have to read the manual on this one as a thorough knowledge is required to get pleasing results.
I recently bought the Canon Speedlite 580EX II Flash and have used it once. I needed it for an assignment at a fortune 500 company. It performed perfectly on my Canon 20D. I set the camera on automatic and the camera and flash did all the work. I was amazed, the pictures were fine. Since then I got a defuser to clip on to the flash head for even better results. Now I have the power for large room situations. I thank God.
Canon have done an exceptional job with their Speedlite units. I initially started with a 580EX standard model, and I loved it. I found it really easy to use and just a great workhorse.Since then I have purchased a 580EX II unit, which is just even better, more power, quicker recycle time and for me, the biggest change that I have noticed is the ability to attach a Pocket Wizard Multimax wireless trigger, enabling me to have more control over the placement of the speedlite at any given shoot.
Canon Speedlite 580EX II Flash for Canon EOS Digital SLR CamerasI love this flash. I just purchased it last week in time for a last minute wedding. I was so impressed with the recycling time and the long battery life. It was great for indoor and outdoor use. Out of all of the tools and equipment I have purchased this one has made the biggest difference. I wish I would have purchased it months ago. We plan to purchase a second one for my husband to use when he assist me with weddings.
Canon T3i is great, but this Canon Speedlite 580EX II gives it its true power! Without the flash, some photos turn out to be disappointing and you wonder what is wrong. Just add this external flash, and the pictures come out bright and lovely. The camera-flash work together beautifully. When the ceiling is white, you can turn the flash up and the entire hall looks well illuminated and your subject also receives natural light. One needs to buy it without any hesitation.
I bought the 580EX II to essentially replace my 420EX after I upgraded from a Rebel XT to a 40D. The added features and power of the 580 were appealing and it doesn't disappoint, being better in almost every way than the 420.One major added benefit of this situation is that I can now use the 420EX as a slave flash with the 580EX II as master.
Answer: Yes, it will work fine! What exactly do you want to do? That's top of the line, but 430ex, 450ex will work fine. You can try'em.