I understand Bob, just wanted to clarify that these lifters are not really "budget" lifters, unless they are compared to Jesels.
The body, has absolutely zero to do with oil issues. The oiling problems stem from where the body ends, at the wheel. Some lifters only come down so far, and don't "shroud" the wheel. This can cause the oil galley to be exposed at full lift.
If you remove both plugs at the ends of the galley, and install a cam and these lifters, take a flashlight and look down the galley, you'll see that the oil band in the lifters never uncovers the galley. But at full lift, if there is not enough shrouding at the roller wheel, then the galley can be exposed, and sometimes quite a bit.
By grinding the base circle down anywhere from .030 to .060 you can "drop" the lifter down in the hole more and that helps with max lift placement of the lifter, allowing the galley to be covered AND using a large lobe (.500).

In aftermarket blocks, like the World and MP you can safely run .500 with no base circle reduction.
I hope this helps guys out there, even if you use a different lifter, what to look for and how to avoid problems with uncovering the oil galleys.

Brian