It doesn't matter what you or I personally prefer, if you want what at least seems to be trustworthy and secure[1], cross-platform cryptography, Truecrypt is what you want.

[1]: Obviously, that is the part that is slowly being evaluated and tested. We'll see what'll happen.

If everyone were using LUKS instead, one would hope that people would attempt to verify that trust in binary distributions LUKS was well-placed as well.