I use tagadab.com for VPS. A set up with Windows server 2008 R2 or 2012 R2 and just 1 Gb ram is more than adequate for running MfPro and costs £17.95/month. They offer a weeks trial for £2. I also run 2 other bots simultaneously on this setup. You don't need as much ram as would be required on a laptop. I am not doing anything complicated though, mainly backing football matches in play with no trading.
The datacentre has its own firewall protection so I have never considered there is a security issue. The real advantage is 100% guaranteed uptime and superfast internet connection around 100 mbps and, of course, you can turn off your laptop. All you need to install is MFPro and a browser to download the setup file and email any triggers you need.
Another advantage is when away from your laptop, you can use the RD Client app on your tablet device to communicate with your server and change bot settings if required.