Of the two servers you posted specs of, the VPS has the potential be the stronger/faster box, depending on configuration, because of a much higher disk I/O rate. The more concurrent data requests your server has, the lower your disk I/O rate goes.
Your site(s) speed is a very big part of how much Google love you get now ...
All of our VPS servers are
6 disk RAID-10 for redundant redundancy, and super high disk I/O rates as a result.
For the same
$159 a month, I can offer you a 3.20 GHz Quad Core Intel Xeon, with 4GB of RAM (burstable to 8GB if/when needed), 160GB of disk space (6 disk RAID-10), and 3000GB of monthly transfer.
We also accept bitcoin - rates are updated every 15 minutes.
Skype us at 'a1websolutions' or call toll free at 1-855-271-0111.