Take a trip down memory lane here:
http://www.old-computers.com/news/default.asp and click on the Museum Tab.
I used to work for Dixons late '70s to late '80s and I had a great time selling and playing with every new computer as it arrived in stock.
Some favourites for reasons unrelated to their virtues:
Tatung Einstein, one of the first "serious" looking home computers. Very competent, ran CPM, had a good monitor, no-one cared.
Oric 1, quirky, powerful and easy to program - had anyone bothered to.
Apricot F1 (which I still have!), about a year ahead of IBM on every front. 3.5" disks, double default RAM, colour support, 8086 chip, etc. Oh, it even included a voucher to upgrade to Windows 1.0 in the box.
Sanyo MBC Series, first budget PC compatibles that really weren't. WordStar & CalcStar were good enough bundled apps. Very reliable.
Sinclair QL, awesome performance, superb software bundle courtesy of PSION, 80% initial failure rate but the microdrive proved remarkably resilient.
Apple Macintosh, my first sight of WYSIWIG combined with NLQ dot matrix printing. I was privileged to see the future before most.
Amstrad PCW8256, because I earned sh*tloads of money selling them. C'mon, a complete system that worked straight out of the box, just add paper? They were pretty reliable and the third party software explosion added to the sales. Thank you if your parents bought one.
Many others, but I still have fond memories and nightmares about the above - work out which...
Paris because one day she'll get old but remain thoroughly usable...