I've tried and used many slider plugins for WordPress, one that I've paid good money for too, and by far this is my favorite! It's clean, it's simple, and it's very easy to use. Oh, and it's free! It's also fast! Fast loading on my blog landing page, and it's not taxing the server like so many other slider plugins I've used.
You can multiple instances on a page or in a post. There's also a button in the post editor to add a LenSlider short code to your post. Nice!
The developer is very good at support. Quick to answer questions and help resolve issues.
Can't wait to see how LenSlider improves over time and what features might get added.
If you're looking for a no frills slider, that just works ... look no further. :)