I find it very hard to objectively evaluate my skills...

I'd say I'm just exactly 'in the middle' - neither bad nor exceptionally good.

I think that I have a decent knowledge of most SQL Server parts...

At work I'm a part of a bigger team - we just have lots of MS SQL machines and there are separate Windows and Network teams.

I've passed MCSA SQL Server 2008 exams but Data Platform seems to be just around the corner...

I wonder what to do next: keep learning SQL Server, or exand my knowledge to Windows.

I'm not really interested in BI components (Reporting/Analysis Services).

The real question is -- is there a market for "Win+SQL admins" or is it better to be a "good SQL admin" 🙂

One thing I know for sure -- other RDBMS are a "No-Go" for me...