I like these just fine. PNY sells tons of reliable RAM chips for desktops and laptops, and their flash memory is dependable too. I personally don't like Sandisk Cruzers because of the extra software preinstalled on them and how finicky they can be to disconnect from your system (an extra hoop to jump through rather than just stopping the USB in the system tray). I've had way more Sandisk USB drives fail after about 100 connect/disconnect than any PNY I've ever bought.
The PNY attache I have is about as slow as it possibly can be while transfering files. It is 8GB and would take over an hour to fill it. On my corsair or kingston it would take maybe 3 minutes.