I've had 2 sets of servo wave XTs and i've never bled them once. They really are fit and forget in that respect. After a year they still feel well made and work perfectly which is more than I can say for any of my mates Avids, Hayes or Hopes. Squeaky, bendy, rattly Hope levers especially!
but equally applies to SLX!
Absolutely true. My brother has a set of these, they look cleaner, cost a bit less and feel exactly the same.
Can't remember where I heard it but Shimano XTs biggest problem is Shimano SLX