You should work with an agency whose portfolio you like, because at a gut level, you want your own company's marketing materials to reflect well on you. Elevated brands are very personal.

But your marketing materials must also move your customer, because market success is ultimately what pays your salary (and ours). Look for a portfolio with work that is insightful, honest, relevant, well-differentiated and motivating, because elevated brands are also very practical.

Maybe what you need is an elevated brand from the Brand Elevation people at Felder. Start with our Portfolio for a gut check.