At my current job, I have free reign to use whatever tools/frameworks I please. Such as NHibernate, OSS, Subversion, Castle MonoRail, Windsor and other cutting edge tools. I am feeling like I am not being challenged enough however. I can learn new things, but there is only one other developer that I mentor and it's getting a tad old. I would have to ditch most of the cool frameworks I play with, but the pay is almost 2.5 times higher than what I get paid now.
I would also be going from a government job (k-12 school district), back into the private sector. opinions?