Hi gash-hand,
I can't really comment on the ML course as I don't know enough about it, having never been through it, or even know anyone who has ... actually, on that last point, a strange thing happened at work earlier; a PC support guy came over to my desk to install something, we got chatting and it turns out he was in RM for 7 years and was a member of Brigade Patrol Troop! Small world! (I am right in thinking that BPT are the Mountain Leaders?) I'll have to go chat to him tomorrow as we were both rather busy today ... anyways ...
I was under the impression that SAS (now also SB) selection was broken down into the following phases:
1) Hills - 4 weeks
2) Jungle - 4 weeks
3) Continuation (inc. e&e) - 14 weeks approx
4) Jump course (if reqd) - 4 weeks
.. which comes to approx 5 1/2 months.
NB: I had heard that the hills phase is now just two weeks, presumably a weeks build up and then test week, so the above may be inaccurate.
I was also under the impression that it has always been the case that any candidate can be RTU'd during any of the above phases (never heard of just the hills being the be-all-and-end-all). Incidently there have been some comments on here that the SBS have a post selection process in addition to the above, and that if one fails that, then they may join the SAS instead . I've never seen how that is any different from the SAS, as they too have their post selection training (e.g. learning troop skills), and I'm sure if one fails that, you would be RTU'd (would that mean a candidate could say "Please can I go SB instead?"

).
Also I believe the weights for Selection are 55-60lbs + beltkit + weapon (for the end of Test Week at least), although of course this is nowhere near 90lbs + belt kit + weapon - as I'm not familar at all with the old SBS course, I'm can't really comment any further. Regarding pass rate, I know that the numbers completing the course are still very low and the Regiment is still understaffed (again, don't know from an SB perspective). Considering the Sabre Squadrons of 22 SAS would only be 200 (approx) strong if it were fully staffed, I would say that the pass rate must still be incredibly low - perhaps the reason for SB being at full compliment is because the Selection process is now open to whole of the Army as well as the Marines? Or would that be too much to stomach?

(JOKE!

) ...
I'm no bean counter and I don't believe in arguing over whether carrying 50lbs or 60lbs is "harder" - the reason is that I'm sure the kind of people who make it through Selection (SB or otherwise) are the kinds who'll never give up, who are ultra determined, incredibly fit and confident enough to survive on their own, or work in small teams - whatever the situation demands basically.
Regards,
Joe