I have had one large and on medium sized order from them, and I would have to say I have been pleased with the quality. If I need to order a large number of plants again, I would definitely use them.
I am hopefully now at the stage where I don`t have to buy large numbers of plants for my tank any more, so I will start to buy Tropica plants from AE.
Make sure you give your plants a quick bath in diluted bleach and give them a thorough rinse. This should see off any Copper or snails.
You get what you pay for, if you want lots of plants cheap then greenline is good, but the quality can suffer. If you want a specific plants, head straight for aquaessentials, you'll not get better quality and service.
Have to agree with what's been said. I've used Greenline many times and have always been more than happy. Always seem to get a decent quantity and in good condition. Now I tend to buy specialist plants and have just recieved my first plant order from Aqua Essentials and can say that the quality and service is superb. If you want lots of plants quick and cheap then Greenline is great but if you want top quality then go for Aqua Essentials.