If you're using Dunlop steels, they feel lifeless because they're cr4p strings. I put a set on and found them duller than their nickels (which are decent)!
Dunlop Super Bright, or the Marcus Miller set, is another story though. Very lively, and the lowest tension I've ever seen in a string, which makes for effortless slap etc. But they took a long time to break in until I was happy with the tone, they sounded far too thin and clanky at first.