We use Mccormick. I have been using it since 2005. We recently upgraded our computers (we try to upgrade every 10 or 15 years whether we need it or not) and I tested the waters on using something new.
What I discovered was this, there is software out there for all budgets. It really depends on your needs. As far as ease of use, it will take some time to learn anything. I have been estimating for about 15 years
and I can still do a take off by hand faster than an on screen. But when it comes to extending and your mark ups and totals the software is great.
Your best bet is to google electrical estimating software and you will find alot offers out there that are more than willing to give you demo of their product.