I like Tanqueray just fine, but the last time I was in the liquor store, I was considering whether I really need to buy a "premium" brand if I'm just going to mix it with tonic (that's pretty much the only way I drink gin). (And, yes, I'm old enough to consider Tanq to be a "premium" brand.)
Any suggestions about whether any of the standard "bottom shelf" brands are worth checking out (e.g. Gordon's, Beefeater, etc.)?