I started with a two-piece which suits street riding really well yet can also be used on the track if it has a full circumference zipper (a must IMO). After many years of riding I'm now trying to figure out how to afford the one-piece I want. Boot-wise, I've used Sidi and Oxtar and loved them both. After numerous crashes I'm certain they've saved me from serious foot/ankle injuries though both have been sprained. Have always used top-notch boots on the street, in stores, and at the track. They're just versatile and my extremities are worth it.
For brands, I can tell you that I was severely screwed over by Fieldsheer and as such wouldn't recommend them. Personally, I'm also staying away from Chinese made materials since there are very few examples of quality coming from there. Pakistan is a common source of standard quality leather. My next suit will be an RS Taichi in the Japanese leather, but it'll cost. Not a good starting point, IMO, and only nice if you're going to do the track for the cost.
EDIT: I should've thrown out the reason I'm looking for Taichi. I'm a very athletically built (lanky?), always looking for "tailored" shirts because the rest look like circus tents on me. Happened upon Taichi at a MotoGP event and they have Japanese sizing which was glove-like. It was hard to keep my excitement contained though the leathers held it back a bit
Anyway, Alpinestars would be my easy #2. They expend an extraordinary amount on safety R&D and incorporating it into their stuff. Occasionally you can catch an episode of Twist the Throttle focusing on them, which tells you quite a bit. But their sizing appears to be standard (46, 48, etc) and thus I've presumed the fit will be much like all other in that category. Too roomy in the chest or way too short in the arm. Just having peeked at the other thread on suits the pricing is cheap by comparison and A* is pretty much top-of-the-line. You can't go wrong with them. The key in any suit purchase is that it should fit you tightly. Sliding down the pavement feet-first, the last thing you want is to have the jacket ride up and expose your back to the asphalt.