Brands tend to vary in the market you are in. When I am overseas I see a few other names that you don't see in the US.
Try this. Get a list of your keyboard phones and then see which one you like. Again, these are 2 year affairs so don't feel too attached to this.
which brands should I be looking for? Also, what are the other features which go best with QWERTY- Is Apple still a good choice for a lot of texting?