After the next wifi release, only the UI should be in integer. Unless you use the screen +/- and tap tempo, the BPM should not be rounded to the nearest integer. We did a fix a couple of weeks ago for that and it will be applied in the next release. (available in the Lock tracks alpha)
The Aeros should stay in sync with an external Midi clock “forever”. In a case where the internal clock of the BB and the Aeros are drifting, we are always realigning the tracks with the incoming Midi Clock.
I was intrigued by their 2.0 release and wanted to see for myself what it brought to the table. Needless to say, I had a serious back-ache after bending down to access all those features there. Personally, I think the feature set is cool but I was not fully impressed with the looping mechanisms and found myself spending more time configuring than actually making music. The size kinda throws me off, too. I also found their time stretching settings confusing and not very sonically pleasing.
I think my biggest problem was my headphone cord kept hitting the screen and causing things to happen because of the placement of the headphone jack, making home use less convenient for me.