The SoF, SoD, Underfoot, RoF, and RoF2 clients are all new enough to support customizing character creation combinations, and any of them should be fine for limiting to a classic Velious experience by disabling newer expansion features like extended target windows, drakkin, etc. via the World:ExpansionSettings variable in the rule_values table.
The Getting Started Playing guide talks about different clients before getting to the Step 1 - Installation phase.
http://wiki.eqemulator.org/p?Play_Gu...etting_Started