I'll also back Chrissytree's site. Most of the other sites don't include variations in accessories between releases in different places, and so just list the US ones, which don't match to all countries and releases. Albeit the Wiki is trying to do that...it's still quite incomplete. Most other sites just list the US one. I'm rather sick of seeing mismatched ponies/accessories on UK ebay because a seller clearly has accessories from childhood but is relying on US information to match them and getting it hopelessly wrong. Chrissytree's site is trying to include all releases, which I think is better.
Though cross-referencing is always a good idea too