Straining pellets versus leaf is a huge difference.
I've tried a variety of techniques for pellet hops, but the only easy, consistent one is using a bag during the brewing process. Once they get into the beer itself it is usually a PITA to strain them out because they're fine enough to clog most filters. If you need to get them out, then you can put a cheese cloth screen around the end of your siphon tube and strain them out that way. It's still not smooth though, and the two beers that I used that technique on have aged much more quickly than expected, which makes me think they were getting exposed to too much oxygen.
Leaf hops are another thing entirely. I have a large, bucket mouth sized strainer as well as a large filtered funnel like Idlehanz links to, and depending on the fermentation vessel, I just use those. Leaf hops don't clog strainers as quickly (or as completely), and it's much easier to work with them. (This is incidentally why I've started growing hops, more of the leaf convenience with less of the higher price).