In reply to Dopey_172: I recently bought a pair of the dry treated 50s. Cracking value.
I don't suppose they are the best out there, but for what I wanted (pretty similar in grade and amount to you judging by your profile) they are fine.
One of the reasons I went for them is they seem to have a pretty low impact force which for someone as 'well built' as me is a bonus (as I understand it). The down side is that they are rated for less falls than many of the top brands, but then I haven't had a lead fall yet and don't intend to be on a regular basis anyway!