My husband is in the same situation. He works for a HK Company and we live in HK but he travels to SZ every week so his China visa is a business visa. That being said, he did a lot of back and forth between Tai Po and China when we first arrived in HK five years ago. Now he stays up in China 3 nights a week as the travel back and forth can be a pain. Even with a driver picking you up, the hassle of immigration gets old quite fast.
We lived in Tai Po for 3 years which was quite convenient for the commute. Lots of choices in that budget.
We now live on HK Island to be closer to school for our kids. There is a direct bus from Wanchai to Lok Ma Chau every morning that has worked well for my hubby this past year.
Best of luck