I think I would have taken the Hi Point over the Jimenez, but neither one is a stellar choice. They are what they are, low priced handguns. The JA-9 will carry better than the Hi Point, but I would put the Hi Point as more reliable.
The Jimenez brand is the latest, if I recall correctly in a string of names for that make of pistol, the companies typical go belly up every couple of years and someone buys the design etc. and keeps making them.
Hi Point at least has been ran by the same folks.
Jimenez has a reputation as a "junk gun" while the Hi Points, despite their faults have a pretty good following.
The Hi Points are blow back operated and due to that their offerings in caliber greater than .380 need a beefy slide to absorb the recoil and make for a very thick gun which makes carry difficult. The magazines can be problematic as well.
If I HAD to have a gun right now for $200 or less......yeah I'd buy a Hi Point, if I did not need a gun right now I'd save a $100 more and look for something else along the lines of a used Bersa or possibly an older police trade in S&W model 10 revolver or used Kel-Tec.