Hard vs. Soft Saddles

[Taffy]

I noticed on their website that Sopris has the Rookie Saddle (which Nanno & Phil have) and the Lumbar Saddle. Does anyone use the Lumbar Saddle? For those who are using the Rookie saddle - what made you choose it over the Lumbar Saddle? It looks like the Lumbar Saddle comes with a saddle pad but the Rookie doesn't. What do you use for a saddle pad Nanno & Sanhester? Sanhester - Have you figured out the rigging system so you can keep the saddle from slipping?