I'm away from home right now with summer clothes only, no boots
Re me letting go of the Lazios & keeping Shelias in their place is first because they look quite similar (though Lazio has the pointy toe, Shelia almond) but mostly because I don't really do the Lazios justice. My legs are too short and I wear my skirts too long (no higher than just above the knee) for them to look good bare legged so I'm limited to wearing them with black skinnies. For some reason the Lazios seem to "stumpy-fy/stumpify?" me (lol) more than Jacobs or Mony boots. The long line of the Shelias is more flattering on me (& I love the glossy pony panel up to the knee)!
So please don't let your lovely Lazios go if you're getting good wear out of them - I LOVE them on others and they're so comfy and easy to pull on.
And re Prescotts Vs Shelias, as well as Prescotts looking more casual, I think of Shelias as more winter boots and Prescotts more trans-seasonal.
Would you say the Sheilas are more fitted on the leg than the Prescotts? The only thing stopping me from getting the Prescotts is that on my thin legs they do look very wide at the top. I'm hoping the Sheilas are a bit slimmer.