I've worked with many database technologies and many data professionals. I don't recall any instances offhand of technical critiques of Oracle. Pricing and business practices are a different story. Oracle the database is fantastic technology.
On the other side, if you get $10,000 of value from a banana, both vendors are viable options. If there is any reason at all preventing you from adopting the $1 banana, you're still better off buying the $1,000 banana than you are scorning it for its price.