I would always open 1
♥, since 5=4 hands suggest suit play, especially when one of the doubletons is weak and the other pure, here Jx Ax respectively.
AQ Kxxxx Kx QJxx, I might be tempted to distort via 1N....I tell a lie...I would distort via 1N
Having opened 1
♥, a rebid of 1N over 1
♠ is silly to the point of absurdity...such a call denies the range shown by an opening 1N, so it is impossible to make that call, and we have a comfortable 2
♣.
Yes, I know that this sequence can create problems with this strength, and there will be many responding hands, after this start, where we wish we had opened 1N. However, that thinking leads to madness, with a constant oscillation back and forth between opening bid choices based on the last time we held this hand-type.
To me, 5=4 hands of this nature are more prone to disaster after 1N than after 1
♥. Just try finding 4
♥ on a 5-3 heart fit, when partner holds a hand such as xx Axx xxxx AQxx (I know, this is ridiculously cooked, but I'm trying to make a point, not suggest an actual hand...try Ax xxx Qxxx Axxx, and 4
♥ is still much better and so on).
The auction is rapid...1N 3N, and the defence is even more rapid....5 rounds of spades and, if you are lucky, you claim.
Sure, 1
♥ isn't disaster immune but we have more chance landing on our feet if we bid shape accurately early on than if we distort shape on the altar of high card description.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari