This is a compliance question rather than a preference, and getting it wrong is expensive in a way that gear choices usually are not.
The verdict up front
Run an ELD unless you clearly fall under an exemption. For most interstate operations it is required, and the practical question is only which device.
Keep paper logs in the truck regardless. They are the fallback when a device fails, and a malfunctioning ELD does not excuse an unreconstructed record.
The cost most people miss
ELD pricing is usually a subscription, and over several years the subscription dwarfs the hardware. A device with no monthly fee changes that calculation considerably, so compare the three-year total rather than the sticker price.
Verify before you buy
Only devices on the FMCSA registered list satisfy the rule, and devices have been removed from that list before, leaving drivers to replace them. Check the register for the exact model on the day you buy.
None of this is legal advice, and the rules change. Confirm your obligations against the current federal rule and any state requirements that apply to your operation. Our hours of service calculator covers the driving limits those logs record.
If you are choosing a device, our Garmin eLog review covers the one-time-purchase option and our Konexial My20 review covers the subscription route.

