Isn't it just.
Look at todays mobile phones, some are so small that they make the TOS communicator look chunky.
I think the technology has reached a point now, that the only limitation in the size is the actual practicality of using the device. for example, you cannot make mobile phones any smaller than they are as you won't be able to operate the dial pad.
I work with speech recognition software and it's gotten so good, I think where now able to actually do a completely voice controlled communicator, much like we first saw in TNG.
But I digress, back on topic: Both monitors look excellent.