[mythtv-users] What is best filesystem for recordings?

[Warpme]

Hi *

I just got some free space on my server (8T Seagate Archive for videos) 
which temporarily gives me spare capacity allowing change filesystem for 
recordings volumes.

Currently I have 2x4T HDD allocated purely for recordings. Both volumes 
are now on ext3.

After years of relaying on ext3 I think it is not best filesystem for 
recordings as:
-delete is very throughput expensive
-chkdsk is really long
-starting loosless cut makes hell of:
TFW(/myth/tv/21101_20150630054000.ts:67): write(57152) cnt 35 total 
2079656 -- took a long time, 2571 ms

So what FS will be better: XFS or JFS or ...?

I think following criteria should be compared:
1.concurrency (frequently I have 8-10 concurrent HD recordings);
2.CPU consumption under high FS load;
3.reliability (I don't have UPS and sometimes power is lost when many 
recordings are ongoing);
4.stability/maturity (i.e. recovery from bad/deep FS corruption);
5.any other I forgot..