Here's a novice's take on the products I've seen/been introduced to in the past couple weeks.
Enzo's ears were glued by his breeder. They recommended I use Tear Mender. We had tried to use Speed Sew glue with Bentley many years ago and it was a nightmare. The comparison I can quickly make is that Tear Mender seems to dry a bit faster, but it's also more liquidy (you can deduce the pros and cons).
To remove glue, don't even bother with Zoeze. Disaster. Didn't work one iota. Uni-Solve was a lifesaver. Makes the glue gummy and it comes right out with little to no hair ripping.
Now, to compare gluing to taping. Gluing seems easier, once you get the hang of it (which I haven't yet). Watching a "pro" do it, it's quick and easy. When I did it, glue got everywhere and we had to start over. The second time we did it it was better, but they ended up crooked because in our desperate effort to concentrate on the amount and location of the glue, we forgot to compare the ears. Also, it took so long that there was no way we were going to undo it at all and start over. Enzo had definitely had enough. And last thought on the glue--I feel like the glue in the middle has to be a bit less comfortable for the puppy than a brace (that you can make bigger as the puppy grows).
Now my thoughts on the tape. If your puppy has small ears it can be hard to get the tape the right size and in there without grabbing hair. I remember with Lexi that we had difficulty getting the tape to stick, even when her ears were cleaned out well. We had a breeder at USDAA Regionals give us some tips and she uses some sort of medical skin prep that is tacky (it's a wipe) that helped the tape stick right away. You also have to measure puppy's head/ear spacing to create the right size brace. So that's an extra step, though see my comment above about liking the fact that it can "grow" with the puppy. I also feel like even a pro has some trouble with tape (again, compared to the glue which seemed fast for a seasoned sheltie person--not me). And I also feel like the tape will likely not last as long as the glue (skin will get greasy, there is a physical thing that he or another dog could grab and rip out potentially).
So there you have my novice views on the popular methods and materials.