Yes, you can start with Magento open source.
There is no platform which is bug free even paid platform too have bugs. thing is how you are customizing and managing your store. How you modified how you configured system. There are more then 3 Lakh developers on this platform working. This platform have very big marketplace so you can get any kind of plugin or 3rd party module which you needed. Community is very strong.
Upgraded technology and time to time they upgrade and release security patches too. rest this is based on your SKUS and requirement too so based on that you can choose any platform.
Hope this helps you!
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