I wouldnt focus on the brand as much as I would on the fabric. Most suits in the $700.00-$1200.00 range are constructed using similar techniques. Im sure those very well versed in suit construction can elaborate. My point is if you want a "workhorse" suit, you need a "workhorse" fabric. Nothing too thin, or elegant, or sheer, that will show alot of wear and break down quickly under the heavy usage of such a suit. My own personal style is that of a "gentleman hobo" as someone on here once referred. I love the look of well made things that fray and age over time. That look was built on my preference for "workhorse" type fabrics. I wear heavy flannels and tweeds in the winter, as well as cavalry twill. In the summer, the suits that have served me the best, in terms of durability, have been mohair suits. I have a RL MTM tan nailhead, made from mohair that is indestrucable. Its light, breathes great, yet the fabric has held up better than some suits that have fabric significantly heavier. I also have a linen suit that is made from a slightly heavier than usual linen, that while it always wrinkles, seems like it will last forever. Not sure if you would want a linen suit to be a "workhorse" suit though, with the upkeep. If you are interested in brands, I would go with RL blue label (can usually be found on sale), Paul Stuart also. The brands you mentioned - zegna, BB, and canali are not very similar, in terms of styling. Whats your style? do you like stylish italian suits, or are you more of a Brooks man, that likes very conservative clothes. This will be a huge factor in what you buy. Where are your other suits from?