There are usually differences in anything you buy. From what I've gathered both here and by seeing different products by various manufacturers you can buy different quality levels in about anything in the marketplace. I think the consensus here would be that Landpride is a quality brand and priced accordingly. Howse is going to be less expensive and built accordingly. It comes down to your budget and your intended use and expectations.
Price isn't the "be all, end all" determinent of the level of quality but it can generally be a pretty good clue in many instances. There are always exceptions, however, and it is for those we must constantly watch.
I just bought a box blade by a new manufacturer (First Choice) that I would describe as Landpride quality or better at fairly near a Howse price. Those kinds of situations are not all that common, but mark a wonderful buying opportunity when you find them. In this case the manufacturer is new and making tremendous efforts to gain a foothold in the marketplace by offering a high quality product at a more than competative price.
I've read here that, for the money, King Kutter makes a good product. Apparently there is one exception to that in their line. Again, from reading here, apparently their tillers are outstanding in terms of quality at any price, expecially at the price at which King Kutter sells them. The consensus appears to be that you can spend a lot more and not get much more or even as much as what they offer on that particular attachment.
Do your homework, do some shopping, ask questions here, use the "Search" feature and you'll be in great shape. Good luck with whatever you decide to buy. /w3tcompact/icons/smile.gif