I like Hearth and Home's Ten to Midnight, Margate, St. Ives (a lot), Black Mallory, Wilke 193, shortcut to mushrooms. With exceptions I tend to prefer blends that are more hybrid/crossover than straight English.
But that's just me. Pipesandcigars.com offer to let you sample their bulks. And they sell a Tin Pipe Tobacco Sampler - "Full Body, English Blends". I can't recommend everything in that collection-- haven't tried them all and I can't stand Presbyterian. But that seems to be the thing with taste; I've loved blends that others really dislike and have hated blends that others rave about.
But if you're broadening out from aromatics, I don't think you can go wrong with Wilke 193 or shorcut. Wilke's a bit gentler introduction in my opinion.