Hello everyone!
Today I received following samples: Naiviris, Prada Infusion D'Iris, and beloved by many Dior Homme. Here is what I think so far and of course as the case with many perfumes, opinions will change in time, but these are my initial impressions. Also, I just recovering from my cold, so please be kind to me

Naiviris - What a pretty, pretty Iris. Diamondflame pretty much summed it up when he said that it is warm, woodsy, and understated. It is definitely that. Too bad it doesn't last long, and for the price I much rather get something of Lutens or Tauers. My hubby said that it suits me better than Iris de Nuit and he is right - I am a brunette who wears heavy florientals on a regular basis. I would love to have it, truth be told, but longevity is a big issue for me -especially for the price.
Prada Infusion D'Iris - It seemed like a weaker, cheaper sister of Iris de Nuit. It is very girly and I love it! And for the price I am definitely getting it, I won't feel guilty spending money on it and it is a good value for the Iris lover. It is not necessarily deep, but very pretty and quality for the money.
Dior Homme - W-W-W-W-O-O-O-O-W-W-W-W!!!!! I would like to put in a disclaimer and ask all Iris Silver Mist lovers out there to not stone me to death for what I am going to say next. Dior Homme IS A MOST BEAUTIFUL IRIS EVER! It is not too carroty, nor too powdery - it is just right. So classy, so sophisticated, S-O-O-O-O-O beaitiful.... Or poor, poor and so stubborn me. Did not wanted to listen when so many of you mentioned it to me. Or snobbish, narrow minded me...Dior Homme - what a boring, unassuming name that turned me away and does not suit this amazing scent at all. Don't get me wrong, I still think Iris Silver Mist is a masterpiece, but to me it will probably be like having tea with a Queen of England: very special and very awkward experience. Too much Iris.
Sorry guys for this haphazard post, but I will be back after I come down from my initial high with hopefully more refined thoughts.

Thanks again for your suggestions, guidance, and warm comments!