Candle Centerpieces - height question

I´m sorry if this ends up posting twice but my computer has been slightly nuts lately.

Anyways I was wondering if those of you doing the cylinder vases with flowers and floating candles could tell me the height and diameter of the vases your using. I like the ones that are of varying heights.

I´m trying to visualize what heights would be best but FH and I have differences of opinion on this.

TIA

I am doing 3 diff height vases w/3 mini calla lillys in weach vase submerged in water w/ floating candles.

The heights of my vases will be 20', 14' and 10'. The diameter is 5'.

I plan on ordering all my vases, candles and mirrors from wholesalefloral.com. They're great quality, but very rasonable.

HTH. If you have any questions FM me.