There are only a handful of members on this board who have had the TIF. I had mine in August of '11.
You say you have been "endoscopically diagnosed" with GERD -- do you mean that erosions and/or redness was observed? The only way to definitively diagnose GERD is with pH studies and manometry...although manometry is often inconclusive. Sometimes reflux can be observed during a barium study, although there is usually no way to tell the difference between normal and abnormal reflux. You should have the full complement of tests, and therefore have more confidence in what you're dealing with, before you consider surgery.
You don't share details about your symptoms, and this has everything to do with your surgical choice. If you have typical GERD symptoms (i.e. heartburn, erosions), and are not overweight, have no other esophageal pathologies, and don't have a hiatal hernia beyond 2.5cm, then you are probably a good candidate for the TIF.
I'm not sure where you found a 65% success rate for the TIF. "Success rates" are slippery percentages, but 80-85% is probably closer to a more accurate number. The problem with TIF procedures (or even lap fundos, for that matter) is that very few are pre-qualified, either by procedure, or initial recommendations. What I mean by this is that it's possible to have a clinical success by the test numbers, but a patient is still suffering with symptoms.
Pre-TIF, my DeMeester score was about 22, with exposure ranges between 6-8%. Post-TIF, my DeMeester is about 4, with exposures 2.4% to 2.9%. Well within what is considered the "normal" reflux range. This sounds like a success, but, in fact, it is not. That's because my symptoms are atypical airway/respiratory, which means reflux is getting into my throat and lungs.
Compounding this is the fact that I am intolerant of PPIs...simply cannot take them because of massive, debilitating headaches. Also have significant heart palpitations while on them.
I met with a surgeon who evaluated me for the Nissen, but he said that, realistically, an exposure rate of 2% is about the limit of a wrap. So, in my case, it would not be worth the risks. I'm left with managing my symptoms as best as I can, with diet, sleeping on an incline, and Gaviscon. Like many others here, I am miserable, especially since I know that there is no hope for resolution of my symptoms, or gaining my life back.
The TIF is reversible, and the surgeon said if he were to do a wrap on me, he would take the TIF apart. He didn't seem overly concerned about this.
The TIF is a much more durable procedure than the Nissen, but it is also not quite as effective. Also, the manufacturer of the EsophyX device clearly states that the TIF is a "bridge" procedure between PPIs and the Nissen. Meaning, again, that it is not quite as effective, and that expectations for long-term resolution of symptoms need to be evaluated.
Before you make any decisions, you need to take some time and carefully evaluate your symptoms, and consider what your expectations are. If it means seeing another doctor, then so be it. I've been to eight since 2008. Also, I would take a good hard look at the gastric infections you are experiencing. It's possible that these are exacerbating your symptoms, and if you cleaned your gut of infections, it could resolve your symptoms to a more comfortable level without surgery or heavy dependence upon PPIs.
Best of luck!
-Bruce