Well, I have an opinion. I have a Hi-Point in an ATI stock. I bought it for fun with the boys. The gun itself is a blast to shoot and it's really compact and small. The new version locks back after the last round and that's a nice feature. The BIGGEST negative in my opinion isn't the gun itself but the magazines.
Out of all that I've purchased, I only have one mag that's been reliable and that was only after I messed with the feed lips. On the other's I could never get them to be reliable. Not only are the mags notoriously un-reliable, you can't get any hi cap mags. Promag does make a 15 round mag but a quick search shows that just about every post on the net about the 15 round promags has to do with the fact that they don't work.
My 995 is rugged, crude, and utterly reliabel but in my own experience, the magazines are the weak spot and for a semi auto carbine that's a bad thing.
For a range/plinker they're great. but, if you can afford it, I would STRONGLY recommend you look for a used Berretta. I believe they'er likely to be more reliable, the fit and finish is 1000% better and you can easily get reliable mags, both regular and hi capacity.
If you tend to care more about how your guns look or you might consider this for self defense, then I think you're better off saving up and getting it. Personally, I think I would consider a Marlin 1894C in .357 as an effective pistol caliber carbine before I would go this route again but they're next to impossible to find.
I still enjoy mine and it is an absolute blast to shoot but you really need to be honest with yourself on what you're getting it for.
Again, they're crude, cheap, and they ARE reliable but the mags are finicky and cheap. If you can get 3 or 4 good mags that all work then you're in business.
Serious weapon? No, great firearm for it's price? YES.
Just be realistic about what you're getting and why your getting it.