For lantus I use the SoloStar pre-filled pens, which it appears that no one else seems to?! They are simple plastic pens but I think they’re really good, and @neobrainless they dial up single units and you can undial them too. I know I used something else before but whatever it was was awful and complaining to my DSN got me this one. And the HumaPen Luxura is my standard Humalog pen. I got very excited when they gave me a shiny new one in ‘champagne’ – turns out you’re meant to change the pen you’re using every so often too, you know, like lancets!