Lexar (by Micron) 300x microSDHC UHS-I on clearance in-store, 45 MB/s transfer rate. Found 2 types today:
2x memory w/ one adapter, $5.68 (was 18.99), Target #056 12 0184 (upc 650590202768), described on their website here:
One card/adapter, $3.28 (was $10.99), Target #056 12 0604, described on their website here:
One odd quirk on the latter one, there are two different Target DCPI numbers, 056 12 0604 & 056 12 316. That said, the two look identical to the point I think they may have had one marked wrong. The former is made in Korea & the latter is made in Taiwan, but almost anyone would be challenged to find tell the difference. They do have different UPC's (650590201402 vs 650590201396) but that's the only visible diff I can tell including the same model number. The former is the one that rang up at $3.28 but it was easy to get them to change the latter from $5.68 to $3.28.