Lemond tsx or tvt?

Bit of bottom bracket advice needed. Today, the drive side cup (right hand thread, Italian) came loose on a ride. Now I'd threadlocked this cup before and done over 100 miles without issue, but it came loose again.

Did I not torque it up enough the last time I fastened it on? Or should I accept that it's always going to have a tendency to loosen itself and therefore replace it with an Italian-threaded cartridge bottom bracket (with correct taper for the crank)? Something like this - http://www.wiggle.co.uk/tifosi-campagno ... m-bracket/

At least a cartridge bottom bracket won't unscrew itself as the bearings are locked away inside.

/edit - or this - http://www.wiggle.co.uk/campagnolo-chor ... m-bracket/
 
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