I am not the most experienced player here, obviously, but I was also looking around for irons comparison.
At this moment, I am playing the MAX set as stated below, available from lvl 47 onwards.
I have enjoyed playing them right from the start. They have good distance, slow meter (esp compared to the other MAX set). And for me, looking to the future, was doubting to make a switch from this set to another.
As I noticing that high trajectory is very helpfull, I skipped the lvl64 irons and are planning to get the Calaways at lvl 85. Untill then, I continue playing the MAX set.
Looking for other wedges is a very good tip, I bought 2 Cleveland wedges (lvl 7-8) which I enjoy playing a lot, esp with regards to the low'ish price (495 each).
Just try to earn credits by running the vids for free credits, accumlate them and have a plan for your future. Don't spend 1500 cr for something you can only use for 10-20 levels at this moment, it's a waste of credits. I think starting from mid 70's, the speed of leveling up will decrease, so untill then, shoot for the stars, save up and buy smart.
Good luck!