yet another CF vs CF

ok. i know there's a lot of this already. and i've done my homework. but like everyone who's done it before, most description online are misleading especially card speed.

contenders
Transcend 400X - 16 GB =$60.00

http://www.amazon.com/Transcend-400X-Compact-Memory-TS16GCF400/dp/B002WE2PW8/ref=pd_cp_e_3

SanDisk Ultra - 200X - 16 GB =$55

http://www.amazon.com/SanDisk-Ultra-Flash-memory-CompactFlash/dp/B002ZDAEJ2/ref=sr_1_15?s=electronics&ie=UTF8&qid=1289454136&sr=1-15

points to consider
--$5 is small but SanDisk wins on this one

--Sandisk has better reputation on making quality products

--Transcend is rated 2x faster(30MB/s vs. 60MB/s write speed). is it really 2x faster?

--Im using a 20D and 7D

--I know Transcend is considered UDMA, is the ultra UDMA too? (i read somewhere that UDMA starts at 300x

--I read at a review somewhere that Sandisk ultra is even better than the bigger brother extreme.

what are you thoughts?