These have been the longest reigning categories so far:
Delkin BBMICROSDFLS1-2GB BMZ 2GB 8p MSD 113x r17MB/s w15MB/S Micro Secure Digital Card Bulk
Price: $6.35
Delkin CF06MJBHT-F2126-D BPR 64MB 50p CF CompactFlash Card Bulk RFB
Price: $5.85
Delkin CFX128I1G1-DABAG00 BQX 128MB 50p CompactFlash Card Bulk
Delkin CF12TFJHP-X1000-D BQX 128MB 50p CF CompactFlash Card
Delkin BBCF305-4GB BRI 4GB CF 305x r45MB/s Pro UDMA 6 CompactFlash Card Bulk
Price: $8.85
Delkin BBCF500-4GB BRI 4GB 50p CF 500x r75MB/s w40MB/s UDMA 6 CompactFlash Card Bulk
Delkin US04GESPP-XX044-D BTQ 4GB USB 2.0 FlashDrive Sandisk Cruzer Rectangular Black and Red Retail
Price: $4.85
Delkin BBSD-1GB-DK BXP 1GB 9p SD Secure Digital Card Bulk
Price: $5.65
Delkin SA02TFNHL-C1000-D BXQ 2GB 9p SD r17MB/s w14MB/s Secure Digital Card Bulk
Price: $6.85
Delkin BBSD115-2GB BXQ 2GB 9p SD 115x r17MB/s w5MB/s Secure Digital Card Bulk
Delkin BBCF256MB-DK CAW 256MB 50p CF 60x r9MB/s w5MB/s CompactFlash Card Bulk
Delkin CE25SBCHH-X1000-D CAW 256MB 50p CompactFlash Card Bulk
Delkin CE25SBCHK-X1000-D CAW 256MB 50p CompactFlash Card Bulk
Delkin CFX01GE8D1-DABEG00 CAY 1GB 50p 53x r8MB/s w4MB/S SLC CompactFlash Card Bulk
Price: $7.50
Delkin CE0GSASHK-F1000-D CAY 1GB 50p CF CompactFlash Card
Delkin CFX512E4G1-DABEG00 CBD 512MB 50p CF 53x r8MB/s w5MB/s CompactFlash Card Bulk
Price: $7.35
Delkin CE51SAZHK-FD128-D CBD 512MB 50p CF CompactFlash Card Bulk
Delkin BBCF512MB-DK CBD 512MB 50p CF 62x r9.26MB/s w7MB/s CompactFlash Card Bulk
Delkin CE51SAXHH-FD000-D CBD 512MB 50p CF CompactFlash Card Bulk
Delkin CF51TFLHP-X1000-D CBD 512MB 50p CF CompactFlash Card Bulk
Delkin BBCFPRO-2GB CBF 2GB 50p 125x r18MB/s Delkin PRO CompactFlash Card Bulk
Price: $7.85
Delkin CF02SALHH-F1000-D CBF 2GB 50p CF 52x r8MB/s w4MB/s CompactFlash Card Bulk
Delkin CF16GETSA-FD066-D CBL 16GB 50p CF 174x r26MB/s w17MB/s CompactFlash Card bulk
Price: $13.85
Delkin CE16NKBVA-FD000-D CBL 16GB 50p CF 174x r26MB/s w17MB/s CompactFlash Card bulk
Delkin CF16NFFVB-FD000-D CBL 16GB 50p CF 174x r26MB/s w17MB/s CompactFlash Card bulk