Its always worth it to pay more for quality. Especially when the difference is only $12.
And I just couldn't care less. That's like one night's worth of sales. I've (hopefully) got better things to do with my time than spending it preparing for a migration and inevitable breakage in the interests of saving myself an hour's salary a month.
* Memory
* CPU
* Storage
* Bandwidth
* Service - which is hard to measure, but also a very important metric.