I have just bought the Tourney X and TBH when I held it next to the Airity, I couldn’t personally tell the differnece….i think Daiwa say that there’s only 10 grams in it at full length but the finish on the x was the only noticable difference for me.
I was offered a really good deal on the Airty in the shop when i was buying the “x” but unless they had got down to the same price, i wasn’t even going to contemplate changing my mind. Obviously the spares package on the Airty is slightly better but in my opinion, i would save your dosh and buy the x.