I would go with MSI, they are a larger company and have been around for years. They are very respectable and almost always provide compatible and reliable hardware.
I have used MSI for years and had no problems, my System 2 below uses a MSI K7N2 motherboard with a 128MB MSI Ti4200.
[size=0.5]Full Aluminium ThermalTake Case
AMD Athlon XP 3200+ *400 FSB* Barton (2.2GHz)
ThermalTake Volcano 11+ Xaser Edition Air Cooling
1024MB Corsair TwinX XMS 3200 (Dual Channel 2x512) 2-3-2-6
256Mb XFX 7800 GS EXTREME
2x WD Raptors (10krpm 8MB Cache) 36.7GB using RAID -0
Video Logic SonicXplosion 5.1 Soundcard[/size]