This is more like a pre-sales question:
My client is proceeding to upgrade all the users' windows OS's to windows-7 and they want us to figure out which option would be cheaper and better between IPSec based (Client based) remote access VPN or SSL based remote access VPN (Client based or clientless-webVPN).
Currently we have two ASA's as VPN devices to which the remote users connect using the Cisco VPN client of some version. We will need to upgrade to some other version of VPN Client, in order to make it compatible for windows-7 (Cost X).
If we choose to upgrade our ASA's softwares to make it compatible for SSL based client/clientless VPNs + Licesnses fees, we will need ot pay for it (Cost Y).
I wish to know what would be the better choice between upgrading the existing scenario to supporting version of VPN Client OR upgrading the IOS' + Licenses for SSL which is going to be altogether a new change in the way the users access the company resources remotely, in short: which would higher and easier X or Y.