Peter Stokkebye Luxury Bullseye Flake is a great one. It is a coin flake like Escudo but with a sweet cavendish center that sweetens up the smoke when you least expect it. It ages really good. I'm smoking some 3 yr old LBF and it's heaven. The price is just right and won't break your bank. Most online tobacconists carry LBF.
And of course Escudo! It’s a bit more expensive but it’s spectacular, especially with age. I popped a 10 year old tin this winter, it was the fastest I have ever made it through a tin.
I’d also recommend GLP Fillmore, however there is a little bit of Latakia in it, so I would sample it before laying in a big stash as it’s not for everyone (myself I really only detected it when I was looking for it, it truly is just there to round out the blend, but if you’re sensitive to Latakia it may be too much).
Highly recommend Viprati. H&H Virginia Spice is surprisingly nice and a bargain blend. HU Director's Cut is fabulous. There's so many good VaPers it's ridiculous. Just a matter of finding the mix that fits your fancy the best.
Not exactly "readily available" but can usually be found (either on ebay or, more rarely, some smaller online tobacco retailers). It might cost you $10 an oz, but it's out there, and it is my favorite VaPer so far, Esoterica Dunbar.
Esoterica Dunbar, C&D Bayou Morning Flake, Castello Fiammata, D&R Rimboche’ SJ, and GLP Stratford are my top 5 in order. Honorable mention to SG St.James Flake, Rattray’s Marlin Flake, and GLP Telegraph Hill. I could name a lot more pretty good ones. It is a buyer’s market for the blends that are available (generally all but the Esoterica, Rattray’s, and SG).