Honestly, I adore my LV luggage-- but I ONLY buy luggage I'll carry on.
I got a steal on a preloved Sirius 45, and it was pristine; even using a cover, after checking it just a few times the vachetta was filthy and it made me sick so I sold it. If you do not use a complete cover, and you check one, it's going to get abused-- baggage handlers have admitted to being deliberately rough with LV. That being said I sold my Sirius and will not check LV again.
That being said, my Keepall 55 Bandouliere, the largest size you can carry on "legally" (airline size restrictions) and my small Pegase (again, carry on) are two of my most heavily used LV pieces. The Pegase is the most useful luggage piece I've ever had-- exceptionally roomy, even in the smaller size which fits overhead, and very rugged. I got mine preloved for an obscene steal, and I'll never let it go. I highly recommend finding a preloved Keepall and a Pegase, which can easily be had for under $1k and are fabulous carry-on luggage-- not just because you feel fab carrying them, but because they are rugged as all get out! I scored my Pegase, Keepall, Deauville and Cannes (latter two are for makeup) for less than $800 total preloved; one is from the mid 80s, two from the 90s and one is from the early 2000s. They all still look great, but are far from new. They've held up so well and have outlasted every single piece of luggage I've had. The luggage really is made for the long haul. If you buy preloved, you really don't worry about them taking some abuse... or at least, I don't! They can handle it, and before I got my Pegase I went through at least 5 suitcases in a decade, each of which cost $100 or more-- they eventually do pay for themselves.
Just my .02.