Really like all of them except maybe the last one, it looks too exposed on all aspects, like its lacking something. The other ones don't look like a typical HDRs though. It's nice to venture out of your comfort zone and try something different.
Well, I think that only for the last one, probably needed hdr process. Photoshop have another "traditional tools that can help you to resolve the contrast from only one photo. Without three shots not even tripod...because playing HDR you must shot with tripod always, you know.
Beside these questions, i like very much the colours you got.
Anyway, you should not make me much attention, because I do not like the HDR, I prefer the contrasts ... and challenges!
I love them all except maybe the last one. It looks "too" blue or something. Actually, I'm not sure that's it. Hmmm. It could just be my monitor too. I've noticed that many of my photos look completely different on my work computer than they do on my laptop here at home.