I've used Attitude 3 or 4 times. Picked up some goodies from them... Super Lemon Haze by Green House, Shiatsu Kush by BCBD, 5-10 TGA strains, Ak-47 by Serious and many, many others...
The only time I had a package intercepted by customs was when it contained over 100 seeds =(. Luckily I had chosen the stealth option and Attitude reshipped at their own expense, this time in 2 different parcels. Both made it, though one took many months? (<---not sure why)
Based on this experience I would recommend Attitude and consider them among the finest seed banks. As far as what seeds I would recommend goes, what is your price range per pack? Are you looking for regulars or feminized? sativa, indica, or CBD? I'd be glad to look around and recommend a couple based on your needs and wants.