I recently bought the V800. I am very pleased with the quality of this product and I understand that rolling out new functionality takes time (I used Garmin before this and although they are ahead on functionality, they are also way ahead on bugs)
One thing that bothers me, though is the way intervals are handled. I would like the V800 to automatically trigger a manual lap when starting a new phase. For example, if I run 4 x 1000-meter, with 1 minute rest in between, I would like to be able to see 8 laps once completed. Now I cannot even manually press lap as the pop-up menus in between the phases are blocking this.

EDIT: I just played around with the simpler interval timer that you configure directly in the unit and noticed that it displays the laps exactly the way I meant. Would be great if the more complicated one you configure on the flow-website would do the same.