Outbound dialing is where it excels. It's especially good with larger teams of reps. Organizing through campaigns and seek lists is very powerful once you understand how to use it. There is definitely a learning curve with seek lists (I've spent tons of time on the phone with their support staff) but once you understand it the possibilities are endless. You can sort which leads show up by a variety of filters. Even with a list of 10,000+ leads and 5 reps calling on it, you can ensure no leads show up in two reps lists, the reps are calling specific territories, and even skipping leads that are likely on their lunch break! One my of favorite tricks with seek lists and only calling people with titles like Director/VP/C-Level before 8:30am or after 5pm their time, when those people are more willing to pick up the phone. They also appreciate a sales rep who is putting in the extra time to call during those blocks.
I like that it is simple, functional and I can rely on it to help me get my work done everyday. My job became much harder without InsideSales.com. The new CRM I am using has confusing features and too much going on sometimes. There are so many fields and functions that I find unnecessary--what sucks is when I look at my screen at all these empty fields, it makes me feel incomplete. With InsideSales.com, I knew what to put in every box and why it would be important. I could put it in once and whether it was my manager, case admin or data analyst or me, we all knew where to find it. With our new system, I find myself having to do more input and data entry for other people to benefit--no longer a "one shot, one kill" deal.
Works much better than Xant - I would avoid that one at all costs. Is easier to use than Groove and Outreach but does lack some of the more advanced features.
I am actually not on the decision making side, but we used PowerDialer because of the easy to use integration with our CRM with Salesforce. Having these two tools in tandem was a great platform for us to do prospecting.
Improved Connect Rates - Knowing when our team has the highest chance of success has helped us optimize our call blocks, leading to an improved connect rate.
Dials - With dialer lists and click to call functionality, we are able to make more dials to the right people.
Rep achievement - Though harder to quantify, the gamification has focused the team around the right KPIs.