What version ASA are you running? According to Cisco the Logging List command is supported in 7.2 and on (but I have it working on my 7.0(7).I have just configured the syslog for VPN (lan-to-lan and remote access). Syslogs are sent to our syslog server. Seems pretty good.

hostname(config)#logging enable

hostname(config)#logging timestamp

hostname(config)#logging list my-list level debugging class vpn

hostname(config)#logging trap my-list

hostname(config)#logging host inside