Winterfang summed it up pretty well. I have a Focus now (just got it a week ago, unlocked from Amazon) I will be looking at the Focus S and the Nokia phones when they come out. The thing is, from what I've heard, the Nokia phones may not be out this year at all. I know they said by holiday, but I have also heard that they may not be out until early next year.
I am definitely not a fan of HTC phones at this point. They have pretty solid build quality, but I just don't like them. I have had several, including an HTC Thunderbolt for work that is sitting next to me (don't get me wrong on that one, super fast data speeds are awesome). The screens are not as good as Samsung, and with Windows Phone, that is a big difference (I love how the colors pop on my Focus).
I think the Samsung Focus S will be based on the Galaxy S II series, just with a single core processor. I had the international Galaxy S II, and it was an awesome phone (minus the Touch Wiz on top of Android). Great camera, beautiful screen.
The Nokia Sea-ray looks really great. Probably based on the N9, which looks incredible (I'll probably pick one of those up when they are out as well). Nokia makes super phones, their screens are very nice now, and the hardware is always solid.
Anyway, those are my opinions.