which iPhone 5 screen assembly machine to buy?

Hi there,

I have an iPhone repair shop. This shortage of screens lately is killing me.

I have a box with a couple of hundred old iPhone screens with cracked glass but good LCD

I used to always send these back to my supplier and he would pay me for them.

Would it not make more sense now to get one of those machines to take off the LCD and mount them on fresh digitizers ?

Which brings me to my question:

Any advice on which machine to buy ?

They all seem to be chinese with no English instructions, and there's so many out there with so many different prices.

So I really don't know what to look for, would love to hear your own experiences with similar machines.

Thanks