Tamron is rated sharper the Canon.
Welcome to sigma. I dropped Sigma several years ago. I had a news repaired (Paid over $100.00, don't remember the exact amount) it took 31 days to get back. When I called customer service and was talking to the I said that " being part of sales and marketing ....." The Lady at the other end said, " I not sales" and hung up on me. I got the lens back, it worked fine and sold it. To this day I will not touch or advise anyone to use Sigma.
I would think your bet choice is to go to a camera store and have a sales person show you cameras and explain how to work them. Have them in your hand to see what is best for you.
What bothers me in a disaster the new people are flying around in the choppers and the same chopper could be used for rescue or some form of help instead of the a-- hole talking about it. They could say the same thing from the ground.
Both have an advantage, depending how you use your camera. I have a 5DIII and a 7DII. I generally keep the 5 with a wide angle lens and the 7 with a long lens, that way I change camera not lenses all the time. Do you want the advantage on a long lens or short. In my case I use two quality cameras. You can't say should i get a full frame camera, generally a quality (expensive) to a non full frame a generally cheeper, less quality camera. Apples and Apples.
Two printers that will do the job are the Epson 1430 or the Canon 100. You can keep a eye out for the Canon specials that end up costing from $100.00 to $0.00. Both do great photos for a fair price. Both print from 4"X6" to 13" X 19".
I had a problem with it and called Apple Tech (800) 275 2273 it took them about 20 min to clean it up. They found it dragged a bunch of junk in with it.