I've found AliX to be quite reliable, if entirely at the mercy of slow-boat from China shipping; if you don't spring for the express delivery options at outrageous cost, and take your chances with the free (or very cheap) shipping, it varies wildy from a fortnight to nearly three months.
Having said that, I've noticed there's a fair churn of sellers. I have many items on my wishlists and several times recently I've gone to select something from them and find the seller is gone. Whether AliX has bumped them for non-performance or they only set up to sell a limited range and then ducked out when finished, I don't know.
I've also dealt with BangGood a fair bit and never had any problems, save the usual slow shipping.
That reminds me, there's another one set up recently
www.wish.com Loads of stuff at decent prices, but not having dealt with them yet, I don't know if it's tat or value.