Be aware that the Aero (Elegant Beauty) is not the same as the Sierra Elegant Beauty.
For one thing, they have different brass tube diameters. . I do like both, and the Aero is the ultimate "ladies pen", IMHO.
The Virage, mentioned above, is a winner for simple elegance and CLASS !!
Since you are relatively new to pen turning, I would avoid the Executive, especially if you are using "acrylic" pen blanks. When turned down to size, the blank wall thickness at the ends meeting the metal hardware are VERY thin (the thinnest of all kits I have used) and the brass tube color, as well as the irregularities in the glue layer, show through. . Painting the inside of the hole can reduce this effect as long as you like the color of the paint that shows through and as long as the paint color complements the blank color and the hardware color.
You always have to keep the potential for this "show through" in mind when using "acrylic" on any pen kit. . It can ruin the appearance of an otherwise very attractive pen.