What are the English proficiency exams accepted by UC International College?

You can either choose private sector jobs or go for the competitive exams to secure a good government sector job. 

There are not enough valid reasons to choose UCIC over Massey University.

As the UCIC is foundation studies and pathways oriented college while the Massey University have a variety of programs with more specialization.

The chances of getting a reasearch opportunity at UCIC are unlikely to happen, while the Massey University offers really good Research opportunities.

There comparison between on campus life at UC International College than staying off-campus:

Better at campus:

•  Easy social life, helps to make friend and familarise with situation quickly.
• Convience in classes, library and support service.
• High safety, good support

Better off-campus:

• More freedom, can choose room, food, lifestyle, location, neighbour
• Cost can be more effective, more cheaper
• Local experience, More power to take decision 

The basic requirement of documents at any international college including UC college are- completed application form, academic records (transcripts and diplomas), English proficiency test scores (e.g., TOEFL or IELTS), and financial documents (e.g., bank statements or proof of funds).

Yes UCIC is cheaper than UW because the UCIC offers programs that are related to foundation studies and pathways for University which are not a full degree programs so these programs are less expensive 

On the hand the University of Waikato offers full degree course programs which are expensive enough.