I've owned quite a few PC's over the years...but the real stand out for me was my little Osborne 486SX slimline PC...such a nice little computer very reliable.
I purchased it in late 93 for $400 which was a bargain back then...but it was second hand and was minus a hard drive and ram.
It's specs where pretty basic though Intel i486SX33 PQFP, Micronics Motherboard with an Overdrive socket, VLB sockets, onboard IDE, onboard S3 805 with 1mb....pretty much onboard everything for 1993.
I kitted it out with original 4mb FPM ram, a Maxtor 120mb Hardisk and a Soundblaster 2.0...it ran doom, doom 2 and dark forces like a champion...I never had any crashs with that PC.
Later on in late 1996 I upgraded it to a Hyperace Am5x86 133 overdrive CPU and added 32mb EDO ram,VLB 3D blaster 4mb, a creative 8x Cdrom, AWE64, and a Quantum 1.2gb harddisk...fvck it was awesome Vquake ran so smooth on it thanks to the 3D blaster.
That pretty much tided me over till mid 1998 when I upgraded to a K6-2 400...but thats a different story 😉