I have the Transfer 56 gal midship on my '06 and installed in mid '08, and very happy with it.
I was considering between AERO midship, TransferFlow and Titan at the time.
1) Titan was good on they web info and when calling them, they responded with complete answers and didn't try to pressure me.
2) TransferFlow was the same, with complete knowledge of their products and installation. In fact the guy didn't want to end the call until I was completely satisfied and all questions answered.
3) But let me mention about AERO and my short experience with them. I called AERO and asked to speak to someone for some answers about their tank design and one question on installation, but was placed on hold for quite a while. (seems like nothing new with businesses now days) When I got someone, he was basically uninterested in talking to me. I asked if I could get someone else and was transferred, but at the end of that conversation, still could not get answers. They basically was not interested and I was feeling I would never do business with them.
I will say TransferFlow is extremely well built, stout brackets and installed quickly without problems. But as time went by, I've been considering an external lift pump, the Fass, and if I wanted a draw straw or a sump, it's going to be a pain to cut through the metal. If you are considering doing this, I recommend checking out the Titan since it's heavy wall plastic and would be very easy cutting a hole through it for draw straws and sumps.
But after my personal experience, I suggest staying away from AERO. Their prices were (slightly) better at the time, but not by much, and the personal one on one contact wasn't acceptable at all.