It used to be that equipping for legal instrument flight meant buying radios with glideslope and adding pitot heat. And while the equipment requirements in the FARs have changed little over the years, the technology sure has. These days entry-level EFIS and GPS navigators come well-equipped and approved for IFR, and even if you don't actually plan to fly IFR, the equipment you bought is up to the task. In some ways, that makes the buying decision easier.
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