Medion is the electronics brand of the ALDI supermarket chain. Generally they are sold very cheap and offer good value for money - but that's still not usually better than mid-range at best. Of course Medion doesn't actually make anything, they just order from ODMs and slap their sticker on it. That means you can sometimes get real little gems.
But...
I find 1600x1200@160Hz very hard to believe - that's beyond what was considered high-end at the very peak of late CRT development. I don't think I've ever seen one come close to that in the flesh. Just consider that 1600x1200@160Hz vertical refresh requires a horizontal refresh of 192kHz, which is just astronomical - and therefore highly unlikely in an ALDI monitor. I suspect you're misreading the specs:
https://www.dhd24.com/archiv/2011/11/5334/1/C … MD-1998-JB.html
Medion MD 1998 JB
Medion MD 1998 JB Größe : 19 Zoll (46 cm Diagonale) Typ : FST Spannung : 100-240 V (50-60 Hz) . Leistungsaufnahme : 130 Watt im Betrieb und 5 Watt in Standby Max. Auflösung : 1600 * 1200 Pixel Horizontalfrequenz : 30 - 98 Khz Vertikalfrequenz : 50 - 160 Hz Bandbreite : 200 Mhz Videoeingang : 15 polig D-SUB Anschluß Abmessungen : 575 mm (Länge) 536 mm (Breite) 522 mm (Höhe) Gewicht: 22,5 Kg
It can do max 1600x1200 and max vertical refresh of 160Hz, but not at the same time 😮
It lists a far more realistic 98kHz horizontal refresh. At 1600x1200 that would work out at a still pretty respectable 80Hz vertical refresh, although given the small size of a 19" screen I'd sooner choose to run it at a slightly lower resolution but higher refresh, say 1280x960 at 96 or 100Hz.
However what makes a screen good or bad is rarely captured in this sort of raw specs. Good geometry and a uniform display is generally more relevant than being able to blast out pixels - because the smaller you go, the more you suffer from the 'soft' weaknesses of a screen. I'd go and have a look before deciding anything, particularly as 18-year old phosphor can be worn out as well as other age-related issues.