I've used 32gb memory but it got really laggy :S Think 16gb's the best option.

I bought the card. Works great. Recommendation!

Was browsing threads and thought you'd like to know this class 10 works fine.
Been using over a year now with no problems.

Sandisk class 4

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Hi guys,

I can recommend Sandisk 32GB class 4

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CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 15.534 MB/s
Sequential Write : 5.840 MB/s
Random Read 512KB : 14.848 MB/s
Random Write 512KB : 10.579 MB/s
Random Read 4KB (QD=1) : 4.064 MB/s [ 992.2 IOPS]
Random Write 4KB (QD=1) : 3.879 MB/s [ 947.1 IOPS]
Random Read 4KB (QD=32) : 4.342 MB/s [ 1060.0 IOPS]
Random Write 4KB (QD=32) : 3.947 MB/s [ 963.5 IOPS]

Test : 50 MB [E: 0.0% (0.0/29.7 GB)] (x5)
Date : 2012/06/14 14:28:04
OS : Windows 7 Enterprise Edition [6.1 Build 7600] (x64)

Bought at eBay:
http://www.ebay.com/itm/SANDISK-MICR...ht_2249wt_1157

Samsung 32 gb class 10 run's great 10'2 write speed and 23 read

my 32gb class 10 transcend is working flawlessly. speed seems ok.
write 5-8 MB/s
read ~28 MB/s
(via SDTools)
cache is set to 4096 KB

I have a SanDisk 32GB Class 4 on a Defy+ 2.3 ROM (Defy red lens in Hardware). However, it's very unstable, always can't read it and errors.
What should I do?

I have tried to format it on the phone but it seems not working. Click format and nothing run and quit immediately.

i use a 32gb sandisk class 10 card and it works great + fast...used a 16gb class6 card before which was a bit slower.

SanDisk Micro SDHC 32GB Class 4 from amazon working great here.