Several years ago, I had my heart set on buying a pistol-caliber carbine in 9mm. Since I didn't own any of the handguns with which to share mags, that wasn't a factor, although mag availability should have been a factor. I didn't give that much thought. Well, the CX4 was beyond my budget, and the SUB2000s were nowhere to be found, so I bought a Hi-Point 995TS. It performed just fine with the factory sights, but I eventually bought a decent red dot. For several years and thousands of rounds, it functioned reliably with only minimal cleaning.
These days, the ol' Hi-Point is in pieces after finally starting to succumb to accumulated wear and tear, not to mention an incredible amount of filth. If not for the fact that I've since bought a couple of ARs and a Kel-tec SU-16 carbine, I'd probably be in a hurry to get it cleaned and slapped back together . . . or sent off for warranty service if necessary.
However, being totally honest, the 995TS is a pain to really dig into compared to an AR come cleaning time, and while it's fun to shoot, it's no more fun than an AR, and the mag limitations start becoming hard to ignore. I've since bought a Beretta 92F and S&W 5903, which opens up mag-sharing possibilities with the CX4 and SUB2000 if I was so inclined. There's also the option of a 9mm AR15. So, like I said, my Hi-Point sits in pieces. It has more than paid for its modest price of admission with a lot of enjoyment, but it certainly has some things working against it.