Bulging L4-L5, Herniated L5-S (back Pain 20 Years) - MicroDiscectomy?

I'm a long time sufferer of low back pain (20 years, I'm 42). I believe I've given my diagnosis & previous treatment rundown on a previous post, but I'll post it here again, hopefully short and sweet:

Last MRI (Feb. 2012)
Bulging L4-L5, Herniated L5-S1 (Central Annular Tear, 6mm protrusion)

Previous MRI in 2008 showed basically the same as above.

I have tried most therapies & treatments, including but not exclusively:
Acupuncture, TENS, PT, ESI in 2008 & 2012, Prolotherapy, Mackenzie Stretching, Chiro, Massage.

Some of my main activities that I've had to scale back to, and serve as productive exercise:
Walking everyday, inversion table, swimming, Mackenzie stretching.

I used to do martial arts and grappling and have not done so in a couple years now.

I have a hard time now with doing things that I HAVE to do, like working around the house or sitting in my car to drive to work as a couple examples. I cannot do any type of sports that have ANY kind of flexion movement. (I'm able to swim because my back is in extension position)

I've been reading some posts regarding folks who've had the microdiscectomy procedure done, and I've met with many neuro and ortho surgeons during my long journey. I've also begun to research BMSC treatment as well, as this is proving to be very promising, but is still in the very early stages of acceptance and use in the States. I've always opted to not have an invasive procedure because of fear of it not helping and possibly making things worse.

However, I'm just tired of the conservative approach not working and I'm tired of not being able to fully live my life.

Believe me, I understand there are many that are worse off than me and I wish I could help you because I know how bad chronic pain is and what is does to you physically AND mentally.

All the doctors I've ever seen look at me (at 5'9, 150 lbs, lean and "looking" healthy), and I pass all the "strength" tests they give me. They tell me to go conservative, which I fully respect. However, just because I look healthy and can pass them pushing on my legs and feet while I resist, and I'm not losing bladder or bowel control doesn't mean that the slightest move or overdoing it won't put me down again.

Case in point, (After 2 years since my last episode and the walking and my conservative exercising not giving me the progress I'm expecting after 2 years), I decided to, (at the recommendation of a sports med doctor), to go see a well respected and very highly recommended, (by friends), PT Strength and Conditioning coach. He put me through an initial PT type evaluation and I had my first session last night. Well, about half-way through, something wasn't feeling right. We scaled down the workout, (which was pretty conservative already), to just stretching at that point. Long story short, I'm now back to stabbing pain, radiating leg pain and tingling, and standing crooked and not being able to sit down.

I'm really beginning to seriously consider surgery, or possibly explore BMSC treatment for the disc(s). I'm sure since it's been 2 years from my last one, I'll need another MRI before doing anything.

My question is, what would you do if you were in my shoes?