I, like geoduck, went from clips and straps to clipless. I would typically do technical rocky sections with the straps way loose so I can get out easy but still have a way to pull/push against the clips to move the bike around. Now that I've ridden clipless, I find they have helped my riding and are way safer. I haven't had any problems getting out during endos or crashes where my leg wouldn't have been trapped under the bike anyway. When I started I did take the time to practice alot on easy trails, even on grassy areas track standing, etc. so I could learn to get in and out quickly, I then did trails I was familiar with, and now I usually don't think about it. My Shimano 520s have been great, I have the release set on the lower side and make sure I clean/lube the pivot/spring part so the release is consistent (don't lube the actual cleat contact points). The lower release angle of Shimanos are probably a plus starting out. And yes, don't use the multi release cleats. Ditto what others have said on pedalling efficiency, it really is that good.

With that said I have been trying to ride on some old cages to practice wheelies and stuff. I have never used just platforms for any serious riding. Right now its harder with platforms (hopefully I'll get better someday) to bunny hop, lift the rear wheel, etc, because I'm not connected to the pedals. So even doing small drops or going through technical areas feels uncomfortable since I've always had my feet attached some how to the bike.

I think your riding style would really benefit from clipless. Try it and take the time to learn till its second nature. I think its one of those things you need to try for yourself and will be worth the cost even if you decide to go back to platforms.

Dave