The Ithaca's an outstanding shotgun. It's a JMB design and lasts well nigh forever. While not my personal favorite, it's as good a pump as there is. The receiver is steel.
However, the price is on the high side for here and now.If it's high gloss and good wood, and tickles your fancy, go for it.
The Big Four are the Ithaca 37,the Mossberg 500, the Winchester 1300, and the Remington 870. Any of these will serve at least one generation of shotgunner nicely.
Most of these are available in a number of permutations for less than $300 for field models, HD models, etc. Not sure what baseline is on the Ithaca Homeland Defense model, the utility grade 37.
I suggest that you start frequenting a range and try out these and maybe the Benelli Nova, an import of good quality. Steer clear of other foreign guns. After handling and shooting these a bit, go with what FEELS best.
HTH...