From what I've heard, they're not bad if it's all you can afford. I understand they also honor their warranty without hassle. However, I wouldn't even consider putting ammunition that I spend money on through a Hi-Point if I had a higher quality pistol elsewhere, especially if this other pistol was one that I relied on for defense. For example, I wouldn't put rounds through a Hi-Point to keep from putting wear on a Sig. A tackle box pistol, absolutely. I toyed around with the idea of a 9mm Hi-Point for such a role not long ago (filled by a CZ-52 I already owned instead). But as a sacrificial range pistol, no way.
I've read some folks who've boasted putting thousands of rounds through a Hi-Point. I won't say that I doubt it. Though in such a case, I tend to think of the Hi-Point pistol as a "What's-The-Point" pistol. Congratulations in putting hundreds of dollars worth of ammunition through your $150 pistol that you bought to save money.
Obviously if one can afford to put a few thousand rounds of ammunition through their Hi-Point in the the course of a year or two, they could have afforded something other than a Hi-Point.
Again, nothing against the brand and this isn't a brand-X bashing rant. However, I find myself struggling with the idea of such a purchase when an extra $100 or slightly more could allow me to purchase a used, quality locked breech (such as a police trade-in 4046 for $329 at SOG for example). I'm not quoting scripture, this is only my opinion.