I've taken the new EU Profiler for a spin, and although there's no NI option (despite having it on the list), I went for the Ireland party system.
Here's my compatability for Irish parties:
Fine Gael: 65.1%
Green Party: 56%
Fianna Fáil: 52.5%
Sinn Fein: 27.9%
Socialist Party: 22.4%
Well, there wasn't really much chance of me voting for Libertas anyway.
For other European Parties:
Saskanas Centrs: 90.9%
Evropská Demokratická Strana: 81.3%
Liberal Democrats: (in England Scotland and Wales) 80.8%
Socialistische Partij Anders: 79.6%
Socialistisk Folkeparti: 79.5%
Sozialdemokratische Partei Oesterreichs: 79.3%
Sojusz Lewicy Demokratycznej - Unia Pracy: 78.8%
I'm surprised how high the percentages are for some of the Irish parties! (I've always suspected that I'd be a LibDem supporter if I lived in Britain). Still, I've always thought of myself as centre-left, so I think that it's basically got me right.