Views are good all over the place. I prefer to be back a few rows (but have sat front row and enjoyed it). I have even sat back row and had a good view.
Ideally for me I would like to be no closer than 5-6 rows from the front as there is so much going on in the show, you do miss stuff in row 1.
You do get a different perspective in the front row, but a narrower field of view.
I have just bought tickets to the Cirque touring show OVO and their prime seats are from rows 5-9 (including their VIP tapis rouge seats).
HTH
-Kay