If you want to do classical recording, I'd suggest a pair of large diaphragm multipattern condensers instead of the small diaphragm models you're considering.  In general, large diaphragm mics are quieter than small diaphragm mics, and you'll get more utility from multipattern mics - Blumlein and M/S miking in particular.

We use a pair of 414 B-XLS at Pleasantry Lane and I couldn't recommend them more highly.  They are dead quiet, offer 5 very useful patterns, and sound great.  I am no fan of the 90's model 414s (like the TL and TL II) but these B-XLSs sound superb on all kinds of sources.  They will not be a ruler-flat as an Earthworks mic, but "ruler-flatness" is not necessarily preferable to "nicely euphonic".

Note that most tried-and-true orchestra miking techniques employ large diaphragm mics with flattering response curves.