If you are going for something adequate for the money, you can use both of these cameras with good success.
I do not know the specs of each exactly, but I would look at versatility, movement, bellows draw, and weight- make comparisions. Then decide what works best with your style.
I have a Tachihara. I have it because of cost, and weight. I find that it suits my needs for field work quite nicely. I can pack it in my minitrekker with 3 lenses, light meter, loupe, darkcloth and filmholder for hiking and the weight is manageable for hiking up mountains. It's actually lighter than my 35mm gear, and much lighter than my medium format. So, it's all I use if I want to shoot landscapes.
I have heard that Shen Hao is very nice to use and it's a pretty camera.
Good luck deciding.
Tammy