For comparison between LV and Gucci I'm not the best person to ask, and again, even amongst 36-ish Gucci bags I only have a few coated canvas pieces as most are leather. The only LV have ATM is a huge vintage suitcase and the castors need replacing (not my fault) and the handle mending (prob my fault) but the canvas part is fine (about 30-ish years old). I also have a vintage Gucci Boston from slightly earlier and apart form some slight flaking of the interior lining it's in great condition. My coated canvas (called Gucci-Plus) Med Joy Boston (a comparative of the 30 Speedy but a couple of cm longer) from 2009 looks like new. Gucci have replaced Gucci Plus with a more ecologically sound version called Gucci Supreme which by all accounts is just as good (and certainly better for the environment).
The Joy with its leather all the way round the body of the bag is no longer sold but the 45 cm Supreme Signature Duffle is the most similar available in 8 variations including 'signature leather' and some very pretty or edgy variations of the supreme canvas (including plain beige/ebony) my favourite is the Tian Print
https://www.gucci.com/uk/en_gb/pr/m...position=2&listName=SearchResultGridComponent but check out the other variations by scrolling through them.
I have SLGs in Guccissima (printed) leather that is very hardy (now called Signature leather) and I would recommend this to anyone. All other leathers would have to be commented on piece by piece.
There are also some more Speedy-like Bostons (no leather going around the girth) in a 35cm and 28cm (various prints and coloured leather trims available) and both sizes have additional (removable) leather shoulder straps and zipped inside pockets plus another for your phone. As far as I know these are not available in sig leather (yet). Example of a 28cm:
https://www.gucci.com/uk/en_gb/pr/w...LQIG4096?position=4&listName=VariationOverlay
Check out the other shapes and sizes of the supreme canvas pieces and browse through the leather bags too including the reversible totes with printed leather one side and the other plain:
https://www.gucci.com/uk/en_gb/pr/c...98109769?position=3&listName=VariationOverlay
I agree with
snibor, I too have given away my only 'original fabric' bag (uncoated canvas hobo from 2005) as where it folds and then rubbed was not repairable, other than that have found Gucci to be hard to beat.