I haven't had them all (yet) but my favorite GLP blend is Charing Cross. I love the Latakia, and it is quite prominent, but it's got a heavy balance of really nice orientals, as well. It is the quintessential Balkan for me. I think it's what other Balkans aspire to be.
I like CC so much that I restrict myself to only smoking it like 2-4 times a month in my rotation. That way, I miss it a little bit and forget how good it is. Then I can really sit and rediscover it. Very complex and contemplative smoke for me. I like it in a savinelli 316ks, with a wider bowl.
Some other GLP's I truly love:
Odyssey - unreal if you love even more Latakia. I smoke it slow and take a few breaks...it develops.
Quiet Nights - also very complex, changes a lot through the bowl, and is the most "fine wine" -like tobacco blend I can think of. (And not just because it has a wine-like Virginia note for me).
Lagonda - also a full English, borderline lat-bomb, but balanced out with sweeter Virginias.
GLP for me is special stuff. I know I can always look forward to hunting down one of his blends, since there are so many good ones. However, several really
good GLP blends are facing the chopping block, so I might have to get hasty and stock up on a few.