If you want to spend ~$50, this 3M:
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But you'll likely do fine with an Arrow from HD.
I have one, I forget where it came from. It's blue with some orange on it. It works everytime I plug it in. It's been hanging around for 15+ years.
That looks like a real nice glue gun but will it only use Jet Melt glue sticks? They're quite expensive, not sure if they're an odd size so you can't use the cheapo sticks or not. For as much as I use a glue gun I'd buy a $50 one if it'll last and use ordinary glue sticks.
Think I found what might be a nice one, Arrow TR550, $18 ~ $25 and made in USA (I'll be picking one up):
http://www.arrowfastener.com/product/tr550-lever-feed-glue-gun