I am generally not a fan of maximum stats as I would then have to explain why my char is doing shadow work instead of something legal or at least be backed by someone with influence. It can be explained, but sooner or later the standard "doesn't want to" gets boring.
On the other hand a stat of 1 is out of the question unless we talk about that pesky fable-fly with the rating 1 bow. Yes everything beyond 1m is -1 die at least, so what?
For Metahumans stats of 1 are just asking for trouble and if you have them you again have the explaining to do. Why would a runner team keep you around? Again it can be explained, but the "power of friendship" is lame even before you use it for the first time.
Generally I prefer Jane/Joe Average characters who excel at blending in. There is no greater threat to your career than being looked at.