Whatever you do, I would recommend staying away from this company.
If you have them host your DNS, you can not make simple changes such as modifying the TTL of your domain.
I just had a conversation with a tech, “Alex”. He was adamant that TTL settings are set across the board to 1 day (86400), and that it is their policy that this can not be changed. They run Linux Bind DNS systems, which means this is about as simple of a DNS change as can be made.
It seems they just resell godaddy domains, so if nothing else just get your domains through godaddy and use thier DNS management interface.