Feature-for-feature, the Intel 486 DX4 write-back 16K is a little faster than the AMD 486 DX4 write-back 16K.
The only systems I have setup with Intel CPUs are those which cannot use other processors, like a dual slot 1 and a dual socket 370. Retrospectively, I find it far more interesting learn about the underdog processors.
I personally have pre-P4 systems setup around the:
Cyrix 5x86-133/4x PCI
IBM 5x86-133/2x PCI
AMD 5x86-160 VLB
AMD K6-III+ 500 PCI
Cyrix MII 433GP AGP
Cyrix MediaGXm-266
VIA C3 Nehemiah 1.4 GHz
Dual PIII-850
Dual Tualatin 1.4 & 1.5 GHz
Texas Instruments TI 486SXL2
NexGen PF110 (coming soon)
If space wasn't an issue, I'd also setup systems around IDT Winchip W2B, AMD K5-PR200, RiSE mp6-333, socket 3 POD100, and maybe a socket 5 pentium.
Plan your life wisely, you'll be dead before you know it.