What are the differences between the different slg?

[DAVI22]

slg3000 costs 39.95 plus shipping, and one clone less than € 8. Are the same image quality?

For example:

http://arcadeforge.net/SLG3000:::3.html


€ 42,01 6%OFF | Latest version scanline generator Classic retro for VGA connection Arcade/MAME/P S etc. perfect display 15khz scan line effect
https://s.click.aliexpress.com/e/c9dfCG9L

€ 23,98 19%de DESCUENTO | Retro VGA scanline generador SLG para conexión VGA MAME o máquina de Arcade y emulador envío gratis
https://s.click.aliexpress.com/e/bxcgzz5R

https://www.ebay.es/itm/VGA-SCANLINE-GE ... z&LH_BIN=1

: € 7,73 29%OFF | Replacement Classics Scanning Generator Board Scanline Generator Board For Retro Games Accessories
https://s.click.aliexpress.com/e/HojkafX

[DAVI22]

Does anyone have any idea of ​​the differences? thanks in advance

[orange808]

Buy an OSSC.

[DAVI22]

Buy an OSSC.

Thanks ,

I know what an ossc is better for full hd or 4k tv, but my question is about scanlines generator