Starting from scratch?

[The Wizard of BC]

A lot depends on what you want to do in your kilt.

If, for example, you want a kilt for rugged outdoor wear you would pick one very different than one for attending your local Burn's dinner.

A lot also depends on your budget. Not everyone can afford a custom made 16oz wool hand sewn kilt.

And finally is your personal style. Are you wanting a kilt to show the world your heritage or did you pick solid colored kilts because they are different from a Tartan kilt? Do you want something that can be dressed up from time to time or do you feel more comfortable in jeans and a t-shirt?
Are you planning on wearing your kilt everyday or only once or twice a year?

When you get right down to it a kilt is an article of clothing. My advice is almost always pick your kilt in a similar way and with similar criteria to what you would use when choosing any other item of clothing.