im currently addicted to balenciaga, and ill prob we wearing mine for years to come, but my FOREVER bag, like even 20 years from now i can see myself carrying it, is my LV.
I've had a damier messenger (damier and the monogram both are forever) for almost FOUR years now. over the last four years ive changed my personal style COUNTLESS times, and my LV has gone nicely with each of them, and it's still pretty much in the same condition it was in when i bought it back in 2003.
if youre more into leather, go for balenciaga. besides the addicting colors, leathers, and LIGHTNESS of those bags, i think they go with SOOOO many styles, and with the right colors it will add a certain edge to your clothes.