The TWAK SHOULD be brightr, but to tell you the truth, you probably won't be able to notice the difference. Go with what you have, is the less expensive, or is the easiest to get.
All things being equal, go for the TWAK just because of specs. These have a slight blue tint to them. If you want less of a blue tint, you could try a TVOK. They are a bit on the warmer side.