If you switch, switch to one of these. They will look perfect on your desk.

IBM 5100 :

A versatile machine. Considered the first portable computer (a “laptop” in the true meaning of the term), it only weighs 55 Pounds. Extra large screen for this time. A must have for true geeks.

Sol 20 (Processor Technology) :

“THE Terminal Computer” (it’s written on it). In advance of its time, you could already plug in your TV to turn it into a Multimedia Experience. A definitive contribution to Computer design.

Rockwell AIM 65

Clearly a breakthrough model : minimalist design, maxi functionalities (check out the embedded printer).

Apple II.

This reminds me of the first nerds at school (early 80’s). They all knew Apple II was the best. They probably made a career.

Commodore PET (Personal Electronic Transactor) :
Some believe this “gizmo” is the ancestor of the Tamagochi..

Radio Shack TRS-80 Model I :
Designed for hardcore gamers. Comes with wireless tape recorder.

Heathkit H8 (1977) :

A no-nonsense home computer. No compromise on performance. Top-class ergonomics (for 1977).

Heathkit H89 :

All in one. A revolution in miniaturization. Probably inspired by France’s Minitel.

Atari 400 (1978) :

Before being a T-shirt brand, they were in computers.

Texas Instrument TI-99/4:
If you don’t like the desktop background, that’s too bad for you.

For real information about these computers, check out Tech Republic : Dinosaur Sightings, Computers from the 1970s.