Latio and Sylphy shares the same engine but when it comes to interior space and boot, Sylphy is world apart in terms of space (like stretch limousine, can cross leg when sitting behind) and luxury feel.
Latio OMV is $14,000. I bought at $53,000
Sylphy OMV is $17,500. I bought at $59,500
So actual price difference is only an extra $39.60 a month or $1.32 a day for a Sylphy.

But now Sylphy price has gone up to $64,000 so it is not worth to buy anymore.