I recently bought the Antler Lightest Expandable Carry-on Luggage in Indigo Blue - Soft Stripe (the one I think the OP is considering getting) and took it on a 2-week-plus trip to Southeast Asia. I'm really pleased with it. It was the lightest carry-on I could find that fit within carry-on dimensions for most international airlines that also maximized packing space within those dimensions. And its light weight allowed me, on some legs of the trip, to keep within the 7kg weight limit of the airlines I was flying on. (Though Antler's website lists it at 4.19 lb/1.9 kg, when I weighed the bag myself, I got 4.4 lb/2 kg). On the occasions I went over that weight limit, and checked the bag, the bag held up well. It's sturdy, rolls smoothly, and didn't have a tendency to topple over. (I was able to find a discount code for 20% off for it at retailmenot.com, in case that's helpful info.)
I had also considered the TravelPro Maxlite 5 Compact Carry-on Spinner but from reading reviews and looking at photos, it didn't look like that one would maximize packing space within the dimensions, since the case tapers toward the top. And a lot of reviews mentioned its tendency to topple over. It's also a bit heavier than the Antler.