update for a safe version Cross (mac)

Hi,
For safety reason, I did not update my Cross version 1.4 since I bought it. Indeed I have a lot of gigs and can't afford to have any problem... But I'm a bit confused about which one I should download. 1.6 ? I read that the version 1.6.1 had fixed some problems of the version 1.6...but at the same time it is mentionned not to download this version which is still on test period...
Does the version 1.6 is safe ?
Or should I download the 1.5.5 version ?
For my understanding I can download latest version (1.6 or 1.5.5) directly, no need to update all the in-between version from 1.4 to 1.5.5 (or1.6), am I correct ?
If I update my 1.4 version to 1.6 or 1.5.5, will I lost my collection information ?
For information about my use of Cross :
I am using Cross (1.4) on Macbookpro. I am using MIDI controller only to trigger tracks on the 2 decks and to do manually the beat matching with the MIDI controller (I use Novation dicer for that with a special MIDI mapping, and works great) and I use external hardware mixer (I do not use stuff such as Vestax for mixing, I use the hardware mixer)
Thanks,
For safety reason, I did not update my Cross version 1.4 since I bought it. Indeed I have a lot of gigs and can't afford to have any problem... But I'm a bit confused about which one I should download. 1.6 ? I read that the version 1.6.1 had fixed some problems of the version 1.6...but at the same time it is mentionned not to download this version which is still on test period...
Does the version 1.6 is safe ?
Or should I download the 1.5.5 version ?
For my understanding I can download latest version (1.6 or 1.5.5) directly, no need to update all the in-between version from 1.4 to 1.5.5 (or1.6), am I correct ?
If I update my 1.4 version to 1.6 or 1.5.5, will I lost my collection information ?
For information about my use of Cross :
I am using Cross (1.4) on Macbookpro. I am using MIDI controller only to trigger tracks on the 2 decks and to do manually the beat matching with the MIDI controller (I use Novation dicer for that with a special MIDI mapping, and works great) and I use external hardware mixer (I do not use stuff such as Vestax for mixing, I use the hardware mixer)
Thanks,