I favour the pitlocks, there has been a lot of discussion on the forum about them so use the search. They are not ultra secure as mentioned by Dylan, but they add minimal weight, certainly lighter and quicker than a mini d lock or cable.
If you have to leave the bike for long periods of time then a mini d lock is better, especially if your wheel set is good, but then I wouldn't leave a bike with a good wheel set for more than brief periods. Summation, pitlocks add almost no weight and make the bike more secure.
I favour the pitlocks, there has been a lot of discussion on the forum about them so use the search. They are not ultra secure as mentioned by Dylan, but they add minimal weight, certainly lighter and quicker than a mini d lock or cable.
If you have to leave the bike for long periods of time then a mini d lock is better, especially if your wheel set is good, but then I wouldn't leave a bike with a good wheel set for more than brief periods. Summation, pitlocks add almost no weight and make the bike more secure.