I suggest a DIY grill...there's a good tutorial in the How-To forum, and it will cost you $5 and some time to make it. It will look very close to the Type-R grill, and you'll like it more knowing you did it all yourself and saved yourself some cash!
I don't like the Mugen grills, but the SI and Type R grills are :thumbup: Whatever you choose, good luck with it!