I am sorry to hear about your problems with Maximizer.
Everyone has their own preferences but Maximizer does have a number of advantages over ACT! Your best bet is to find a good reseller who will enable you to experience the benefits.
CABC have worked with Maximizer since it's first release and pride themselves in providing first class support, training and consultancy.
We have also heavily invested in Maximizer add-on products to enhance product capability for our customers.
Regards
CABC Support