What's the highest quality option/codec for DVD to Mobile?

I’m using DVDfab 6.0.2.x to back up copies of our DVD media for steaming via a Network Media Tank. This device will play most popular codecs as well as DVD VIDEO_TS directory/ISO rips. To save space but keep quality, we’re using the “DVD to Mobile (generic)” mode to encode to AVI/XVID/MKV…

My question: what is the best codec/option to use to get the best quality vs doing a full-blown DVD to HDD rip? I will post screen-shots shortly on the settings we’ve been using…

Thanks!

Please see screen shot.