I've always wanted an IBM PC/XT. As a kid, I had a mishmash computer made from parts by different manufacturers. A proper Frankenstein's monster. It went through several iterations before its eventual demise. I shouldn't complain though, I also had a Commodore VIC-20, a C64, and later on an Amiga 500 as well.

I still long for a mint condition IBM PC/XT and that green monochrome glow. A PS/2 Model 50 or 85 wouldn't hurt either. Heck, a complete line of IBMs would be a dream.

Look at this beauty!

↳ Image: IBM PC/XT by Ruben de Rijcke, licensed under CC BY 3.0, via Wikimedia Commons.