we use d-links at my shop, and honestly, they're pretty crappy in general. you really need to watch out on them, because the hole the antenna screws into breaks pretty easily. it'll just float its way into the router, and you have to take the whole thing apart to find it, then you realize the part that was holding it on broke completely. then you order a new one at warehouse cost
i'd actually suggest linksys if you're going to replace it at any time. good luck with the new antenna though, we haven't tried that.