Important tips before buying a Slide Scanner

Important tips before buying a scanner Slide:
Basically two types of affordable scanners:
Those who scan fast 1-5 seconds, but just acceptable results (50 to 150) with little or no settings.
And the range Plustek (3 devices 220 to 600) that scans much more slowly (depending on the desired resolution)
with software to achieve very good results.
But there is a BUT: This is the software installation, and that's why I give only 3 stars.
Once you have successfully installed the software, the operation is perfect. But what a pain to install, and I'm not a beginner; I have spent a little more than a morning to finally see the scanner function properly.
I highly recommend buying this device by beginners