Yes, I have. James has some very good juices for the price. I love their Ry4, it's a different take on caramel & vanilla-tobacco - there's an undertone from mom's spice rack in there that I haven't been able to place. Matter of fact I'm finishing off the last of a 50ml bottle as I type. What I also like about MBV is that you can add extra shots of flavor, along with PG/VG ratios, Nicotine% and bottle size. And in the US only, you get a free sample with orders over $15.
Some of the fruit flavors (Pink Lemonade) I found to be a bit weak - 2 extra shots fix it just fine. I've also tried their Ginger, Green Apple both good without extra; Cinnamon Hot Tamale (careful with this one, when they say hot, they mean it! But wow snapped back to childhood memories!!!) Another cinnamon juice is called Venom, which add a touch of menthol. Not bad, but not one of my favs.
One of my other favs is Cherry Balsam - a light cherry flavor with piney undertones. This one is probably not for everyone as it has rather a bitter/sweet nature.
The last one I'll mention is to die for. I didn't expect to like this one at first, because it's a fruit flavor (Strawberries 'n' Cream) called Moo Juice. Creamy smooth on the draw then the berries come out in mouthwatering goodness. YUM. I ordered this one as the proceeds go to a good cause (as can be seen on their site).
Anyway, I'll be going back and forth between these two sites for a long while... I just
have to try MBV's "Bacon" juice at least once!