What thread would you suggest to use for machine embroidery?

I use 40 wt threads in my machine.
I like the polyester threads, they don't bleed, shrink, or break easy :D:D:D

This is what I used also.

me too, no particular brand, i like 'em all.

Nothing beats Isacord, for durability and sewing performance. It's a 40wt poly.

Best prices are here:
https://www.imachinegroup.com/store/cart.php?m=product_list&c=11]https://www.imachinegroup.com/store/...duct_list&c=11[/url]

I've been buying there for years.

I get all my embroidery machine thread from www.marathonusa.com
I use only polyester as it washes better and just holds up better in general.

rayon threads are shiny and nice too for embroidery