I think
Braids, Cabal Minion and
Braids, Conjurer Adept are equally entertaining! There are certain legendary creatures which just seem crazy OP to me, like Atraxa and like Kenrith and like Muldrotha and so forth, but I think that because of what the card itself says rather than because of the deck it assembles around itself. They're just too good, but you should continue to play them cos I'll get over it. Nowadays I run enough interaction that I can survive long enough to see what the second wave of your 75% deck can do, even if I'm unlikely to beat it!
I think all the commanders named in the opening post are fun to play against! I really, really like Thantis in particular because groups I've played in have had trouble making the first attack and Thantis absolves everyone of blame, plus I generally like card effects which add a rule to the game for variety's sake; the way it forces everyone to think of a new strategy and get out of the goldfishing mindset is beautiful to me. In the same vein, I always love to play against gimmick decks like
Grenzo, Dungeon Warden,
Hallar, the Fire-fletcher,
Sliver Queen and so forth because you get to see a greater breadth of cards and also think twice about the ones you're running in uncommon scenarios.
I seem to pick commanders based on how I feel about the colour. When I see white/red I don't think "Tajic!" so much as think of my favourite cards in the pair, think of
Kjeldoran Outpost and
Castle Ardenvale and
Kher Keep and go, which commander is gonna reward me for playing more than the average amount of land, and which will let me live to turn one hundred so I can play all the best lands ever? Maybe always being able to play
Brion Stoutarm on turn four would be solid cos he gains me life? Maybe
Firesong and Sunspeaker want me to build an X-spell deck, or maybe
Tiana, Ship's Caretaker would lead to a more reliable strategy that spent all its mana each turn? and what are my favourite equipments and utility creatures anyway? All I can do is hope the opponent is fine with that approach. I don't mind being a synergy-first player's punching bag once or twice but I don't at all agree with the comments I've seen going around to the tune of "If you don't build your deck as cut-throat as possible you're doing a disservice to your opponents!" Makes me wonder what happened to using the game's incredible variety as an avenue to self-expression!
(I did find myself developing a distaste for heavy tutoring, because it leads to artificial synergy and shorter games and I like long unpredictable games and getting down to a top-deck situation. You just can't run yr pet cards against these decks which are always on, unless your pet cards are all Swords to Plowshares variants. I posted a few slightly bitter comments on this forum on the subject and now feel silly about it, hee.
I think that, just as in other games and sports, just as in art, literature, food and music, when you get heavily enough into the scene you might make the mistake of developing a set of pet hates for totally innocuous tendencies other people in the scene have. try not to value yr preferences and principles above someone else's equally valid take on enjoying themselves.)