My impression is that the emigrant direct is more generous on the CL, but I base that from a couple of months ago. I do have the SeaMiles with $400 CL. I applied for I-Tunes last month and was turned down because I "have sufficient credit" with them. Go figure.
My rant continues...I requested a CLI last month on SeaMiles and was turned down. They said they'll send an explanation letter but never received one (and they wouldn't tell me over the phone; could be due to newness).
Also, I paid all my CCs down to $0; I wanted to be CC debt free going into Christmas. I paid the $200 balance in full on SeaMiles. The payment cleared and was posted to the account and showed an available balance of $400. I used it again a week later for $150. After the charge posted, I again paid the balance in full of $150. So, in a 10 day period I paid twice. This time the payment cleared on my end and posted in SeaMiles, but Juniper reversed my available credit not only by the $150 but also the $200! So, my available credit was $50, with a balance of $0, with two payments not being credited. I called Juniper and they said that if you make two payments within a 10 days period of each other, they will reverse both payments, put a hold on them, and credit back those payments after 2 weeks! Both were credited in 10 days, but I never heard of this. My attitude towards Juniper has soured and SeaMiles is on my short list for cancellation later next year.