Re: Switching from SSG to SRX (SRX110 EoL?)

Much of the branch SRX line went of of sale May 2016.  They are still able to be supported through 2019 with Junos updates and contracts.  And as this is recent you may still find models available for purchase.  The SRX110 in particular is not end of sale only particular versions of it.

http://www.juniper.net/support/eol/srxseries_hw.html

As mentioned the SRX300 series are the general replacement models, but the SRX110 is still an active option.

http://www.juniper.net/us/en/products-services/security/srx-series/compare/#a=P110,P220,P300,P550,P1400,P1500,P3400,P3600,P5400,P5600,P5800