RIGHT ON THE MONEY WITH THIS ONE!
The TLD's that failed were due to the angler pulling back on the top crossbar of the reel and actually ripping the reel off of the reel seats. I have personally used a TLD50II to fight a giant or two (stand up) and they held up with no problems under 30 lbs. of drag. The entire frame issue IS resolved in the new TLD50IIA series---no worries here. Not to mention the handle, drag lever, and price are better. If you're doing any kind of serious stand up fishing (marlin/giant bluefins), the Tiagra is your better option however the new TLD's can definitely hold their own--especially with your typical gulf stream quarry.
As for the braid---start with a few wraps of mono to keep the braid from slipping on the aluminum spool. You can either do this or wrap some gauze or other tape around the spool to give some friction. Join the mono to the braid via a double uni knot. On top of that you could go with 80, 100, or 150 lb. Power Pro or other braid. Personally I would go with the 100 since it is a bit thicker than the 80---this will keep it from digging into itself when under pressure. Another way to prevent this is to spool it yourself, at home, and PUT IT ON WET AND UNDER AS MUCH TENSION AS POSSIBLE!! You should be able to get 500+ yards of 100 lb. Power Pro on a TLD50IIA (I've got this same set up on my Tiagra 30WLRSA's).
On top of this, you can put a mono top shot of 50-100 lb. mono. Join the two via my "Sebile Knot" of which there is a video on the site. This will give you a VERY clean, "knotless" connection that will not get hung up in your guides. I've got approx. 75 yards of 80 on top of my 30WLRSA's which gives me a total of almost 600 yards----more than enough to stop ANYTHING in the ocean (especially in a center console where you can run the fish down if you absolutely have to). This exact set up has withstood MANY of giants up to 600 lbs.---yes, a 30WLRSA.
Another good thing about the braid is that you do not have to replace it year after year. For the average weekend angler, it will last 5-10 years (maybe more). This means that while it may be more expensive off the bat, over the course of time, it will more than pay for itself. Not to mention the time and frustration of taking off thousands of yards of line and putting it back on. Every couple of years you can simply hook up the end of the braid on one reel and reel it on to another reel. This will reverse the braid, making what was once on the top now on the bottom and vice versa---giving even more life out of it.
Sorry for the extra long post, but I think I hit all of the points. And yes, the 7691 or 7692 is the way to go. I actually prefer the 7692 since it is a bit thinner in diameter---just have to go up on the hook size by 1 versus the 7691. i.e. if you're used to using an 8/0 7691, then the 9/0 7692 is the same size. I just like the way the thinner 7692's rig in my baits a bit better. Both are EXCELLENT hooks!
Tight lines!
Squid