TurboTax Deluxe includes the 1040 long form with itemized deductions (Schedule A), along with everything in Free Edition and PLUS.
TurboTax Premier includes everything in Deluxe, plus Schedules D (investments) and E (rentals and royalties).
TurboTax Self-Employedhandles income and expenses from self-employment (Schedules C and C-EZ) and farms (Schedule F), along with all forms and schedules in Premier.
TurboTax Live supports all tax situations offered covered in the TurboTax Online products above, plus live help from a CPA (certified public accountant) or EA (enrolled agent) whenever you need it, and the option for a final review of your return before filing. The CPA or EA can even sign and file it for you.