Depends what you want it for. No matter how good Andy at Gears or Bara are, they will never get over the fact its a synchro box. For any proper motorsport or regular track work you want a dog box. I use the glebe box which isn't the best but is good value and a big improvement over std. Before the upgrade I would regularly beat the synchros on the std box. For a road car then the std box uprated would be fine.