I agree Botkier and Kooba used to be much better. RM I think is not as good as it used to be but kind of mixed - some better than others. I think Coach are decent (the leather ones IMO, not the fabric logo bags - those are all over the place too).
MK - IDK so much about quality I'm just put off that I see SO many of them around where I live.
Two of my more recent purchases are brands that aren't that popular here but I think they're very nice quality - Frye and Cole Haan.
Agree- Frye bags are as well-made as their boots. Like them, yet avoid for weight. Same for Dooney. Quality exceeds price point... can be heavy... Mostly not my style but the quality stands out & always prompts a second look (or touch, or sniff...).
Also agree w/ decline in quality for LP, RM, Cole Haan. Kate Spade have shifted some materials and their marque, yet materials & workmanship remain solid and her zippers always delight- they glide like butter (better than any of my Bals). Second only to delicious leather, a great zipper can seduce me (anyone else)?
Have (way) too many old school RMs - packed away- never use them, yet they won't sell now for close to what I paid in classic RM buying-frenzy.
Coach 1941 line is worth a new (or first) look. Strikingly different from the prior few years. Inventive yet functional designs and delicious materials. Beautiful suede linings, thick, chewy leathers, top quality hardware and finishes. Discovered these via Meg's piece about the new Coach Rogue bag in early 2016.
Agree about yummy leathers on many MBMJs (none in my collection- love petting them but they don't move me).
Madewell have wonderful bags at very accessible prices. Other standouts include Want les essentials, Sophie Hulme, some Rag & Bone, Alexander Wang, Roots, Longchamp, Furla, Anya Hindmarch, some Joy Gryson. Discovering Elizabeth & James... had an an SA remark ( unprompted) how their workmanship is exceptional for the price point. Deadly Ponies look spectacular online... Haven't seen one IRL.
Collection includes older Bals, Givenchy, St Laurent, Ferragamo, vintage LV, Jimmy Choo, Philip Lim, and some of the above.