T5 BIS
A: Gloves, Leggings, Necklace [Maiming], Ring [Striking], Ring [Maiming], Weapon, Bracelet [Striking]*, Belt, Chest
M: Helm
either: Boots [M/A], Earring [M/Maiming]
* Bracelet [Maiming] may be better depending on further DTR / damage formula research.

T4 BIS
A: Gloves, Leggings, Ring [Striking], Helm, Earring [Striking], Bracelet [Striking], Belt
M: Chest, Weapon, Ring, Necklace
either: Boots [M/A]

These are based on rough stat weights.

The main items that are "obvious" in terms of BiS are:

- Allagan Ring of Striking
- Allagan Chest
- Allagan Belt

Everything else basically floats around based on your Accuracy requirements. The overall weights are relatively close for everything aside from those 3.