Well I am very new to golf as well (only been playing 8 months) and I know this was a big step for me in choosing Irons as I had been previously playing with a second hand set of pings.
I got great advice from my pro who suggested that I swing around 8 different makes in simulator and reviewing the results with him narrowing it down to 2 (callaway x18 pro or taylor made RAC OS) It was then down to personal choice which for me was the X18 pro from callaway as it felt very comfortable and easier to swing.
However since having these clubs I have finally managed to get my handicap of 28 down to 25 which I was over the moon.

My next big step is purchasing a driver in which I will do the same method
1) Talk to my pro
2) Practice swings with various drivers and hit balls in a simulator
3) Once down to 2 choose the one which I enjoy swinging
Hope it helps you to choose
Cheers
Mark