low-hanging? perishable? niche? (after 2nd slow job search)

(See also blog post http://bigblog.tanbin.com/2013/12/strategic5y-investment-in-tech-xx-again.html, )

Evaluation in terms of long term job security, demand, job search, job interview, salary level

^^ core c#
^ python? growing demand; low-hanging fruit; might open many golden gates at baml and jpm
^ FIX? low churn. Hard to self-learn
- socket? frequently quizzed, low churn
- wcf
v wpf? not my chosen direction at the moment. Too big a domain.
- linux/c++ optimization? too niche
^ option math, stoch? often asked in-depth, but few roles in SG
- fixed income math? not used on the buy-side
- risk mgmt math? stable demand
v quant strategy? vague, dubious domain, apparently zero role in SG