Yes REgent is alot bigger. We have 1 in each car. They are awesome though, in my opinion. Gosh I really would wait.. I know it is a great sale.. but you know I got my second Regent like three months ago and got it for $209... and obviously that wasn't during the big Britax sale.. So I think you could possibly find a good deal on whichever seat you choose when you really are ready to move your child to the next carseat. I can't remember weight and height limits on wizard but you could wait if there is still some growing room.
Kelle
Mom to Riley (05-03)
(She's a girl, not a boy)
Used to sit in REGENT
NOW SITS IN FRONTIER
WE LOVE!!!