There are advantages and disadvantages to both types. The handheld digital microscope with the built in camera is more portable and versatile and can provide up to a 360 degree view perspective but is usually more expensive. Digital camera eyepieces for microscopes are generally less expensive and can be adapted for use as an accessory with any standard microscope. Both types generally come with software which can be easily upgraded via download. Both are self contained units and require only simple cleaning for maintenance. Any serious repair work needs to be handled through the distributor or dealer.
If you require portability, hand-held or mounted versatility and convenience then choose one of the Dino-Lite series of digital microscopes to satisfy these requirements. If you have an existing standard type (biological, stereo or compound) microscope and you want to convert it to a digital microscope, then you should chose a suitable “AM” series digital camera for your microscope.