Has anyone recently looked at benefits packages on offer from companies who allow the employer to donate X amount and the company allows employees to select their benefits, either on line or via a helpdesk?

I am finding the whole thing a little daunting to be honest as there are so many providers. Also so may different benefits to select. Has anyone had a particularly good experience or recommendation for or against a particular provider? Can anyone give any advice from their own experience?
Thanks

Debbee Dale