(there were definitely more posts from unman about it, too hard to find)
Not sure what you are talking about. I don’t have a lot of qubes. I use alt+F3 every time I run anything, because it’s so much more convenient, not because it’s faster. It does present you the list of apps as you described, doesn’t it? You don’t need to write the whole word, too. Try to enter “rbr” and you will see Tor Browser as the first option – just enter will be needed to run it.