What works of contemporary calligraphers are worth investing in? Please recommend some.

Xu Youbing is the first choice with great potential. The others are Fang Fang, Long Kaisheng, Yu Wenlin and Du Yiqing. If you have enough money, you can consider Zhou Huijun and Sun Xiaoyun. Of course, my teacher, Mr. Yang Mingchen, has a high level. I have most of the works of these people. Because I own a gallery. As scary as some famous brands, try to touch them as little as possible to save you money.