I do not doubt that these commanders are great, but if youre looking for the best, DougY wrote an article on the top 10 Vehicle commanders last month on EDHREC
In real life, this involves a lot of time researching, as well as quite a bit of disposable income
In his base form, Jecht has Menace (he must be blocked by two or more creatures), and whenever he deals combat damage to a player, you can exile the card to return it to the battlefield transformed, on its other side
Its jam packed with great enter the battlefield effects, which leads to a lot of interesting plays as the game goes on
"Ken the Warrior Dragon": By summoning it to the opponent's field with "Gen the Diamond Tiger", "Ken" will mandatorily make the "Dark World" player draw 2 cards and discard 1 card
With one ability Aphelia creates Snakes, and with her other ability, she kills you with them