"Is it any good"? Hard to answer, except from ones own 'place'. As for this one, I have been involved in numerous m.arts - over the span of forty years. Along the 'way' - I have been LUCKY enough to have very sincere, experienced and notable guides. The numerous colored belts and gloves, sashes and certifications that accumulated over the years are really just cloth and paper -- it was the blood, sweat, toil, tears and laughter that was shared that made all the difference. I am a 19 year veteran of NYC law enforcement, and have been involved in 'action professions' for over 26 years total...and have been called upon to utilize the accumualted experience/martial many times- much, much more than my peers on my present job.
I can state, without any reservation; that my time spent as a member of the Systema 'family' has been the most enjoyable and productive period of my life and martial study. Although I keep in touch with 'the arts' - Systema is the methodology that I have found to be most congurent with my personal warrior way-ist inclinations...and I will remain with The System for the remainder of my days.
Now, is it 'good' for you? I am a firm believer that Systema is NOT for everybodys tastes or desires. Only the individual martial artist can 'seek' out their 'best' way. Only you can find your way 'home'. So said, I would recommend you taste the Systems 'cup of tea'...and decide for yourself, firsthand - up close and personal; and then decide for yourself. No one else is 'you'...none of us wear your skin nor walk your individual path to personal protection effectiveness or life fullfillment.
You asked your question...but only you can truly answer it.
Self knowledge, firsthand experience is truly the only valid understanding one can hope for.