https://www.sony.co.uk/pro/support/software/SET_BPE-SS-1238


1.) Compatibility with Sony XQD M series memory card and Lexar 2933x XQD 2.0 440 MB/s
2.) Image quality improvement regarding XAVC-L and MPEG HD 422 recording

$153.50 128gb
Sony 128GB M Series XQD Memory Card QDM128 B&H Photo Video

$159.95 128gb
Lexar 128GB 2933x XQD 2.0 Memory Card LXQD128CRBNA2933 B&H Photo

Are these Sony M cards fast enough to shoot all frame rates?

The Lexar writes at 400 Mb/s while the Sony chokes beyond 150 Mb/s. For the extra 6 bucks, I'd get the Lexars.

The big plus on the Sony side though is that they can retrieve corrupted data- but will these cards deliver at high frame rates?

The M series are fast enough. I using Lexar x1333 64 GB no problem with 4K 60P
The Sony G series Have also droped in price $169.00

http://www.bhphotovideo.com/c/product/1086278-REG/sony_qd_g128a_128gb_g_series_xqd.html

What's Sony doing? Who would want to buy the M series with such a minor price difference...?!

Thee G series also includes a XQD card reader