If you want really fancy, there is a beautiful French restaurant called Le Mout. It is on a nice up-scale restaurant street called Cúnzhōng Street.
Their website is:
It is much nicer than Smooth or others, but can be costly.......
No. 59, Cúnzhōng Street, West District
Taichung City, Taiwan 403
Also for a fun night out, there is an upscale teppanyaki on Taizhong Gang Road or another on WenShin called Cha Mo Nix.
When my brother and his wife came out, we went there. They loved it. It works out to about 1200 per person with a big dinner and tasty dessert. The service and environment are very nice.....
197 Taizhong Gang Road, Section 1 (Near Science Museum)
506 WenShin Road Section 3