I'd definitely buy it again. It's lighter than SRS+ (real weight closer to lg1+). Problem free and very durable.I was so happy with it I even wrote a review if you really feel like wasting time:
spaced.pinkbike.com/blog/SilentGuide.html

I really recomend it to you. Only if you use new saint cranks (don't think it applies to the old ones) you should order it with a special bashguard that accomodates their overly beefy bash tabs.

 Hi...wow, thank you very much...reading you review was far from being a waste of time...it was really helpfull and definitly made my decision easier...I like the fact that it has no moving parts and it's so light...that was awesome

 No problem man. I'm glad it helped. Hope your silent guide. I sure do mine

 A po co? To tylko zbedna waga

 no racja

 Łańcuch czekałem na nowy wtedy, robiłem w przerwie foty

 Zreszta wrzucone tylko dla blogowej recki

 Tu jest mniejsze tarcie niz na zebatce wiec szkodzi pewnie mniej niz uzywanie go na np e13. Skoro sie slider nie przeciera to watpie zeby przecierał sie łańcuch.

 to całkiem fajny wynalazek, może kiedyś..