Caveats - Many of the boxes are now gone, and some of these are sole survivors, which may not be reflective of what current production is like today. So I can’t be certain that all these are exactly the same lines that OP is querying. Also, it feels like some lines have changed brand names over time, again clouding ‘what is what’.
Bordeaux: Spiegelau is on the left, the far right is an SZ Tritan Forte in 27 oz (?). The one in the middle is a 22 oz SZ, in what I suspect is also a Tritan Forte since it was the same look/feel/flaws as its bigger brother. Overall the lips on the SZ, while very fine, are not as crisp as the Spiegelau, but I’m not sure that Spiegelau depicted is in the line OP are curious about. There are no creases at the point where the stem meets the bowl on any of these. There very fine mold lines on the stem of the SZ, and one can visually see (in bright light) a ripple line in the base as well. Spiegelau also has that crease in the stem, but a cleaner base. The SZ bases have slight lips on their bases, which are larger than Spiegelau. I find the visual clarity of the Spiegelau to be a little less distorted when looking through them empty and twirling, but it’s hard to know if that is a function of more consistent crystal thickness, or slightly different geometry in comparison. The SZ have a more pronounced tulip shape, and among all my 22 oz Bordeaux types of stems, I think the Spiegelau’s are the most ‘slab sided’. I think these are all roughly comparable in day to day survivability; we break lots around here so that might be a consideration. It almost never gets mentioned, and I’m not sure they are still regularly available, but in this segment I think the Waterford Marquis 22 oz Bdx crystal is actually super. I find it is ever so slightly better balanced than these two, Riedel’s equivalent, and other producers.
If I had to choose only between OP’s selections, I would go with the smaller SZ.
Burgundy: again, Spiegalau on left, SZ on right. Here, I’m not sure if the SZ are anything like what OP is considering. These Zwiesel Glas (the new brand SZ had adopted) in their (I think) Chime lineup. I like Spiegelau’s far more - they occupy less table / counter real estate, I prefer rounded geometry, and they feel more refined. The ones on the right have a crease on the stem, a lip on the base. The rims of the bowls, on both, are smooth and crisp, but the SZ might be ever so slightly thicker. It’s not something I’d measure with a caliper, but a person looking/feeling closely, might notice.
So with all the caveats that I’m not sure if what I’m contrasting is really what OP is considering, in this segment, I’d pick Spiegelau.
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Also consider the kind of entertaining whatever glasses selected would have to serve. Is it sit down style dinners, quaffing in the kitchen, standing cocktail parties, backyard bbq etc. I generally have guests choose what they want, and my observation has been that most lean toward smaller stems. Nowadays, it feels like all the glassware at these mid prices is really high quality and much more refined than what was available a generation ago.