Everyone keeps dissing Tai Hao on quality... but I'm not sure exactly how they could be worse than SP. Are they significantly thinner? Are they the wrong size and shape? Do they mysteriously jump off the keyboard and attack you with a shiv made out of a stabilizer insert?
Their typography is, IMO, far better. The stock SP font looks dated, and honestly, is only appealing for "retro" sets.
SP's big deal is customization. But if all you want is standard OEM-profile 104 sets with your preferred colour selection, TH looks like they can do the job much cheaper and just as well.