I also have an all BAT system - D5SE, 30SE, and stereo 60.
You can't really go wrong with a BAT preamp! The 30SE gives a little more flexibility than a 5i 'cause it has some single ended connections. Though I've not done a direct comparison to a 5i w/30SE, the sound of a 30SE is absolutely fabulous. Lately, 30SE's have come down in price here on A'gon so if you can find the extra money, you won't be disappointed.
Steve
You can't really go wrong with a BAT preamp! The 30SE gives a little more flexibility than a 5i 'cause it has some single ended connections. Though I've not done a direct comparison to a 5i w/30SE, the sound of a 30SE is absolutely fabulous. Lately, 30SE's have come down in price here on A'gon so if you can find the extra money, you won't be disappointed.
Steve