We are finally moving off of the DAT72's and I am looking for some
experience in regards to which manufacturer to buy from.

My DAT's have been Certance for some time and we have had ok luck with them.

So I am looking for some reliability etc (currently using BE 9.1 NW6.5)

My first choice is LTO

Will consider AIT if you think it is better.

Thanks for the insight!