If you want Mono Canvas I would say maybe Fang. Her vachetta and canvas is great. I don't have the SC Monogram from her, just other Mono LV. If you want the leather version.... hmmm there was a seller on iOffer that had it. Are we allowed to post iOffer sellers?
carta: If I could find good BV, I'd tell you all about it, but all the ones I have seen (even Fang's) all have faux suede lining.

I think the only option is the Korean sellers (same ones that are doing Bals). I hear through the grapevine their BV is really good. It's pricy though. However, when you consider you're getting a Maxi Veneta for $260 as opposed to $2600, it's still an incredible deal, especially if it's spot-on. I haven't dealt with them yet, I don't know why - maybe I'm just scared to try someone new.