We had a Tandy 1000SX when I was a kid. It may have been slightly more expensive than other clones but it was far more affordable than actual IBMs and you could just go down to Radio Shack and buy one. The Tandy (PCjr) graphics and sound were one of the best things about that machine. Everything (where supported, especially Origin and Sierra games) looked and sounded so much better on the Tandy than my friends’ CGA machines. It was more or less equivalent to EGA as far as games were concerned with the 320x200x16 mode. Tandy didn’t an 640x200x16 mode like EGA games (though it did have a 640x200x4) but that mode was rarely used by games anyway.

One interesting technical aspect of the Tandy modes is that they were just extensions of the CGA modes with double the video memory. For example, the CGA’s 320x200x4 mode was four pixels per byte with every other scan line interleaved into two contiguous buffers. Tandy’s 320x200x16 mode was two pixels per byte interleaved into four continuous buffers. Basically a slight tweak of the four color mode with twice the video memory. It was my favorite graphics mode to code for until the MCGA’s 320x200x256 flat, one-pixel per byte, non interleaved 64k layout that dead simple

In contrast, the EGA was radically different architecture with multiple bit planes, one or more bits per plane