In my experience, I definitely prefer to hold two aces (AA) rather than ace-king (AK) when starting a poker hand. Although both are powerful combinations, there are a few key reasons why I lean towards Aces.
Starting Strength: AA is the strongest starting hand in Texas Hold'em. Having two aces in your hand significantly increases your chances of winning the hand pre-flop, as your opponent is unlikely to have a better hand pre-flop.
Greater Consistency: Over time, AA tends to maintain its strength, regardless of the situation. On the other hand, AK can be vulnerable if you don't hit the flop, since you are betting on improving with the community cards.
Ease of Play: AA is easier to play post-flop compared to AK. When you have aces, you generally know where you stand in your hand and can make more informed decisions.
Although AK is a strong hand and can lead you to big wins, AA's consistency and undeniable strength are deciding factors for me. Of course, in poker, there is always room to adapt to circumstances, but generally speaking, I feel more comfortable and confident when I see two aces in my starting hand.