My favorite is the high rank Teostra armor~ It just looks sooooo coooool on girls. Like, there's just something classy about it.. AND it's a good armor! By the end of MHFU I was using Teostra armor and I think Tigrex HH, good combination and fun times.
I also used mixed sets with the teostra armor for my dual swords(main weapon) which gave me awesome skills.