I'd suggest checking out Pomona (
click me).
For example, a 6383 + 6384 would be one set to consider (straight, no shroud, with strain relief). They're made of nickel plated beryllium copper and can be soldered or crimped (although they're not gold plated, they'd be excellent for your needs). They've others however, including RT. angle, gold plated straight, or even retractable types if you prefer.
Keep your wire size in mind during your selection process, as the gold plated ones are 20 - 22AWG for example, while most quality silicone test leads are 18AWG (i.e. watch the specifications closely).