PC is marketed (these days) to be a home owner grade of cordless tools, rather than contractors or professional grade. Stanley owns a few different brands of cordless tools now, PC is one, Dewalt, and Mac tools are others. I believe PC's warranty also won't cover hard use damage since it's not considered a professional line (from things I've read on here). For light occasional use I'm sure they are fine. I'm sure they would even survive harder use, much like Ryobi does, but you'd be asking a lot of them to keep up the constant abuse of big jobs. Failures will probably be more frequent for them. Another thing is PC seems to have undergone a lot of change in not a huge amount of time, so platforms or tool design may only stick around for a few years - where as Dewalt is still making and supporting the same tools they made 20 years ago with only slight modifications to newer models.
If money is a factor - which it usually is, for general home/ hobby use I don't think you'd have a problem. If you can step up to Dewalt or Milwaukee a lot of doors open though when it comes to quality, tool choices, battery choices, availability, ect... As the saying goes, invest in a complete system and not just the first tools you're buying. Don't shrug off the brushed tools from someone like Milwaukee, in favor of the new brushless stuff PC has or is coming out with.. My brushed Milwaukee impact driver is stronger than the brushless Dewalt I also have. I have the Milwaukee fuel line too, along with many of the brushed counterparts. I can promise you the base model Milwaukee stuff is nothing to overlook.