Yeah, the Blend-O-Matic thing took me a while to figure out as well (longer than the Repurposed Laundry Washer, Blaze Sweatshop, and most of the other IV machines). As Pyure notes, Greg seems to make a point of giving the top-tier machines goofy names, which can certainly be annoying to look up in NEI. I find that it helps to search the second line of tooltip text (such as "schreddering" in the macerator case), which is the same across all the tiers.
Originally, though, I found the Blend-O-Matic by searching for its block ID. When I typed "macerator" into NEI, it returned the Basic, Advanced, and and Universal macerators, whose IDs were something like 352:93, 352:94, and 352:95. I typed 352:96, and it gave me the Universal Pulverizer, which had three slots, unlike the four in the NEI Pulverization recipes, and was EV. Some time later, I tried 352:97, resulting in the IV Blend-O-Matic. Then I came up with the second-line-of-the-tooltip idea, which works better.