I find 450 sized quadcopters to be a good balance between fun and practicality

[G+_Darren Maunu]

I find 450 sized quadcopters to be a good balance between fun and practicality.  Small enough to throw around and big enough to carry a nice camera and gimbal set up.  It's a good all purpose quad.

[G+_Fr. Robert Ballecer, SJ]

Yup... 450 is about as big as I want to fly. -- Still enjoy 250 more, but 450 definitely has its uses if you're going to take video.

[G+_Darren Maunu]

So no DJI S1000's in your future?  

[G+_Fr. Robert Ballecer, SJ]

The D1000 is a cool device... I covered it in our NAB special. -- $6,500+ !

 

But the expensive part if the camera gimble... I can build a GREAT octocopter for less than $500.

[G+_Darren Maunu]

I work for a UAV media company and we fly S1000's.  A single S1000 setup (ground station and all) that we fly is around $25,000.  Talk about pucker factor!  Not as fun to fly knowing a mishap could cost hundreds to thousands of dollars.  My personal multirotors are considerably less!  The 450 in my video was built for less than $300 including radio.  Multirotors that usually bounce rather than break have higher fun factor.  Less fixin' and more flyin'!

[G+_Philipp]

Really powerful Mini H Quads with FPV are great fun. Search for Blackout videos and you'll know what I mean.

[G+_Darren Maunu]

I've watched a lot of mini quad videos.  They look like they'd be a lot of fun.  Had an interest in FPV for a while but never made the jump.  I think something like the Blackout 330 would be right up my alley.  A little more speed over the 250 size without much loss in agility.