The KBC Race is essentially the same as the Choc mini. The Poker is the smallest and most compact. It really comes down to what layout you prefer. I was in the same situation as you and since I will use my portable keyboard for typing mostly simple notes and reports, I decided that I didn't need dedicated arrow keys or a dedicated Function row; I chose the Poker. My Poker is still in the mail and should be here in a couple of days, so if you are still undecided when it arrives I will post again and try to give you a quick review.
I would really most likely stay away from the 87-TKL models like the Leopold and the PLU if you are looking for a portable keyboard. Yes, these keyboards are small but I just don't think that one would enjoy lugging them around all day, every day.
As for which switch to choose, this is a tough question. You said you like blue switches, but I don't think that any other switch gives the same feel as the blues, but without the click. I have tried browns and I can say from personal experience that I hate them. Compared to blue switches browns are mushy and barely tactile. I haven't tried clears but I see many mixed reviews about them. For these reasons I chose to order my Poker with black switches. I like the weight of my buckling spring, but I wanted to try a linear switch, so I chose black. Some people think black switches are too heavy and prefer red instead, it's just personal preference.
One quick note here. It seems kind of hard to get Pokers in red switches, another reason why I got black switches. I'm sure you could find one with red switches if you really wanted. But the Choc Mini I believe comes readily available in Red Switches if you think those will be your cup of tea. But aside from that, the Poker is a PCB mounted keyboard. This means that the keys aren't mounted to a seperate plate, like in a Leopold. Because of this it is very easy to make switch modifications. If you order one with blacks and say you think the keys are too heavy, then you just pop the tops off the switches and replace the black springs with the springs from red switches and ta da, you have ghetto reds. To my understanding ghetto reds are essentially the same thing as red switches, but with a black top. You could buy all new red switches and swap the entire switch out, but that would cost more money and time. But never-the-less there are plenty of videos that demonstrate how to modify PCB mounted switches.
