ISC SF is great. If you get a pack going there chances better than not you will get you post and you will get it faster than usual. ISC Los Angeles however is an entirely different beast. At ;east one vendor refuses to reship if your letters are sent to/ you live near enough ISC Los Angeles for your mail to go through there with any regularity. I don't know what it is about ISC LA, but they are really snoopy and petty when it comes to even the smallest of parcels, seems to be a high level of scrutiny at ISC LA and I don't know the reason why there more than anywhere ele in the country. People who live in LA or near, are encouraged to get P.O. boxes on the east coast. When your mail arrives there, they send you an email let you know and then reship it to you. I reccomend USABOX.com for this, they are really good guys over there, not the least bit snoopy or suspicious. I have a box with them, even though I live in Northern California and 90% of my mail lands at SF ISC and moves right along through the same day sometimes....there was a period of time not long back where my lettters kept going to LA ISC for no apparent reason...and ALL of them I got an LL accept for one maybe two letters that got through. They say its a 50/50 chance with LA ISC but I think the odds are way worse than that in my experience. Sorry to break it to you if you have mail there. If it keeps getting sent there with any regularity, do look into getting a PO box with USABOX or one of the providers...its the only way around the dreaded ISC Los Angeles....