I personnally have given up the second floor.
I really tried to appreciate to play 10 12 14 16 (2 up 2 down) Because it was kind of logical set up, and appreciate the look. Plus my kit had two suspended floor tom.
But : I went back, ordered to Mr. Dancingcrow (thx to this forum) the part to get my 16" on legs, so as to set this way 10 12 13 16.
Many reasons :
1 My main toms are definately 12 and 16". 12 in front, 16" on my right.
2 I had troubles going fast from the 12 to the 16", and play the 16" with the left limb. During fast fills, it felt risky to me and my own abilities to catch the 16" with my left hand and then get the cymbal.
3 Not so easy to install the 14"/16" on a stand
4 I am a tom guy and appreciate having 3 toms in front, even if the 10" is optional
5 I definately appreciate the tone and feel at ease with a classic 12" 13" 16" configuration.
6 Curiously enough, on my kit the 14" was really great and I had diffculties to tune the 16" low enough (felt like a 14>15)
I miss the look of the first set up, the fact that small toms in front are more practical to install. And another thing, the two hanging floor communicated together, creating a lot of lows, that was great but felt just a bit imprecise.
I must say that I have had health problem that made my body a little less supple than it should have, so fast and fluid rotation towards the 16" went difficult; I tended to play the 14" on the parts that I used to play on the 16".
PS : I hope my english is readable (!)