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Any broach-cut barrel will shoot lead. I don't know of an aftermarket Glock barrel that isn't button-cut; so they, all, should handle lead bullets just fine. The advice you've been given on Lone Wolf barrels is sound. Other than personal preference, there really isn't any good reason to spend more money on another brand of replacement barrel for a Glock. A Lone Wolf replacement barrel will do everything you need it to do; and, it's not going to cost you a lot of money.
(Remember, you're only going to get just so much accuracy improvement out of the typical Glock lockup and slide rail system.)
I've been buying the same brand of replacement barrel for many years; so all of my replacement barrels happen to be extended length Bar-Sto's. However, on a Glock, this is strictly because of my strong personal preference for EDM, 'slit-cut' muzzle ports rather than for any presumed improvement in accuracy.
I honestly believe you'd be very happy with, either, a Lone Wolf or Storm Lake replacement barrel on your Glock; and, you'd be a lot richer - too! With a Glock it really does come down to which brand you prefer.
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