simple additive friction (viscosity) calculations .... every time a fluid goes through an orifice, etc. you get a pressure drop. The faster the flow through the orifice the higher the pressure drop; higher the pressure drop the more resistance to 'flow'. The more holes, the lower the 'drop'.

At the least and if you cant find operating data or *flow vs. ∆P charts*, Just calculate the total combined open area (of the holes) of the external and compare to the internal/basket design. Choose the one with the most 'open inlet area'; most open area (summation of all the 'holes') will give less 'drop' and highest 'flow'. Dont choke your inlet with a lot of pressure drop.

Whatever you do dont apply *both* in a system .... friction and pressure drop is additive and will result in LESS flow.
Yeah, the Groco's are expensive ... but are easy to clean out when (not if) they get (rarely) fouled. If you suck a jelly or grow sponges or zebra mussels, etc. inside one you'll quickly appreciate the difference.