My favorite looking TAG is the Seraph. Rules wise I like camo marker TAGs the best so the Ulhan is currently my favorite since the NCA can support it so well. I'm hoping the Cutter and Sphinx get rescuplts. The Overdron and Xenodron are both awesome and rules wise they have some strong advantages over most other TAGs. However, they both look more like giant unidrons rather than TAGs. In terms of factions I don't play. The O-YOROI and the new SZALAMANDR look great.