I have no issues and I am a @blueyonder .co.uk account user so have been migrated for months.
The Spam filter is very good and in my account captures just the spam.
We receive no advertising emails via Google.
Each account has over 7000Mb of storage unlike the previous storage of 30Mb.
Off course if you are not happy with this you can always purchase your own domain and have a personal email address or take
http://www.gmx.com/ email address, I have one of these as a backup plus 2 standard Googlemail accounts.