With just under two weeks to go until Apple announces financial results on January 24, analysts are lining up their refined estimates for just how well the company may have done for the holiday quarter.

UBS analyst Maynard Um, in a research note to his clients quoted on GigaOM, believes that supplier data is pointing the way to Apple’s best-ever quarter.

Um bases his assumption on the preliminary first quarter revenues for Multi-Fineline Electronix (MFLX), a manufacturer of flexible printed circuit boards for products including the iPhone and iPad. MFLX also says that it saw an increase in shipments from its largest key customer, which Um believes to be Apple.

Those results follow others that indicate that Apple’s first quarter (October – December) may be incredibly good. Verizon noted “better than expected iPhone shipments” last week, AT&T touted strength in iPhone sales last month and Cirrus Logic (which makes analog chips for iPad and iPod) reported better results this week. In addition, Dialog Semi, Catcher (makes the metal casings for Macs), TPK (maker of iPad 2 touch panels), and Hon Hai (assembles iPhones and iPads) all reported strong December results.

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