I switched from the Blazers / Mini-Blazers to the Vane Tec Super Spines. I think the consistency of the Vane Tecs is much better. I had arrows fletched with the Blazers and you could see some vanes leaning one way and others leaning the other way. Maybe it does not affect flight / performance, but it is in the back of my mind that it would. I have not seen that kind of leaning or anything like that with the Vane Tecs.
For the smaller diameter shafts such as the 0.246 shafts, A/C/C or Axis, you could use either the FITA vanes or the 1.8". For shafts like the Gold Tip Series 22 and larger, you may want to consider the 2.3". I am going to use 3" for my indoor shafts - Gold Tip 30X. I use the 3" on my Gold Tip XT Hunters and have not had any problems with broadhead flight.