I quite like Panini -- especially as a major hockey collector -- and their baseball stuff has been good in my book. They don't always hit a home run when it comes to the picture they choose, and this Matt Kemp First Day Proof parallel /10 from 2011 Playoff Contenders misses the mark by quite a bit.
Numbered 05/10, I think I saw one once before on eBay and forgot to bid. It was never re-listed and I wasn't sure if I'd ever see another again. Thankfully, I did, and I'm happy to add another card to my Kemp Collection.