I also really, really like the filtering. And of course, the reviews, which are the main reason I buy toys. I also appreciate the quick shipping.
Things I don't like... I believe you have to put your credit/debit card number in every time and I wish it would just remember. Prices can be a bit high, compared to the prices I've seen in sex shops. I miss the days of free shipping on all orders, too.
My main issue, though, is selection. I know EF has a huge selection, BUT I still find holes in the selection that make me sad. I actually just got back from a sex shop and I found a blue version of a toy that is only available in pink (ugh) on EF (the Cyber Flicker). I also saw the "raspberry" Turbo Glider (not available on EF), a different shaped version of the very popular blueberry Turbo Glider. I was very dismayed to see several flavors of System JO H20 lube that are not available here (actually, all the flavors on EF are red flavors -- cherry, raspberry, strawberry, and watermelon, while I saw at the sex shop lemon, tropical something-or-rather, and tangerine). And finally, I saw a $30-or-so glass dildo called the Icicles textured teaser -- I assume a close friend to the Icicles tapered teaser (sold on EF) -- that really should be sold here, as it is cheap, glass, AND textured. So yeah, it is interesting to me that certain things are sold on EF but other versions of the same toy/lube aren't. That was a long paragraph...
With the forums, please make the posting box bigger!! I'm feeling really claustrophobic in here.