i have done a bit of reading and it seems that xfs or jfs are the ones to use due to its good handling of large files.

I have never used either for long periods of time so im not too sure which to use, is there anyone here that has been using it for a while and could advise me on which offers what and the pros and cons.

I am going to make an lvm and use it for storage of videos/music/pictures and general storage of a few apps i have

I've used JFS for years, at least 4 years. Haven't had an issue yet. I don't run mythtv, but do, do a bit of dvd authoring. So that includes lots of writing then removing of files. Speed and overhead are better than ext(2/3) and reiserfs.

I personally have very little xfs experience. Last time I used XFS was shortly after Suse included it way back when. Version 1.x something, completely unstable. Many, many improvements have been made since then, but I just haven't attempted to fix what isn't broke with JFS

JFS is NOT actively developed, but it is maintained, with responses to bugs and other problems in less than 24 hours from IBM's devs.

I've read this issue with XFS, you would want to investigate to see if this issue is still present -
http://www.noogies.org/node/3
http://en.wikipedia.org/wiki/JFS_(file_system)
http://en.wikipedia.org/wiki/XFS