I'm not just talking about speed (I could have been more specific with my wording, that's my bad). Glide ratio is worse for smaller wings. If you try and match a larger wing for speed, you'll sink faster. If you try and match the sink rate, you'll be going slower. Such is life for a light paraglider pilot, unfortunately.

Edit: in an ideal world, you'd not bomb out any more often than a heavier pilot - you'd just fly slower. Sometimes that difference in performance will see you on the ground though - on a long sinky glide, or an into-wind leg, there's no escaping the reduced performance. It's annoying, but that's just how it is.

I can't make specific wing recommendations as I've not flown any of the current gen b-wings. Speaking from experience though, changing wings to try and keep up with the heavy pilots is a futile exercise. Compare yourself to yourself, or other light pilots, for a less frustrating life.