Brights tend to be bitey by themself, so blenders will case them or blend them to prevent them from being too acidic.
Astleys 109 is blended and cased lightly with a very slight licorice. But, I'd give it 5/5 stars.
C&Ds Virginia Flake is a favorite of mine, but I am certain that it is blended with a white burley to make it more palatable. It has less the acidic notes, and more of the oatmeal and rasin flavor that a blend of burley and VA would have. I really like it though.
McBaren's Virginia #1 has a lot of bright in it, but their efforts to case it in honey makes it even more bitey, IMO. It can be like a mouth full of pissed off yellowjackets.
Dans Hamboirger Veermeister is about teh same mix of Virginias, but less cased. It smokes a lot more smoothly.
In talking with Jiminks, I think that D&Rs Three Sails is all brightleaf. I would have to say that it is not detectably cased, nor blended, so draw lightly on it, but it should give you the best idea of what a brightleaf tastes like. I will add that C&D's Bright Virginia Ribbon is as well.
Germain's Medium Flake is mostly bright as well, but honestly my last experience with this one... I would call it an aromatic by most of our standards. You might also notice that it is impossible to find.
Hearth and Home's Bright Night is another one. But, you will notice with these that there is a lot of dark leaf in the mix because that delicate bright leaf quickly and easily turns black with age and pressure.
McClellands Dark Star was a bright flake, that had been pressed and heated till it was a nugget of blackness. But, the flavor was slightly lemony sweet. But, McC went tit's up, and it would cost you over $100 a tin to try that one.
Wessex Bright Slices are amazing, but once again, it is hard as finding an Easter egg in a hippie colony to find.
I'm sure I am missing a few, and I don't want to be a suggestion hog, so I'll let the boys here make some suggestions. Let us know what you get and what you think of it.