Hikari Sentai Maskman:
These are probably my favorite Pre-Zyu sentai team suits. They're rather nice and simple looking. They're also very sleek, stream-lined and easy to identify at first glance. The white portions of the suits makes all five colors pop really well. I particularly like the white streaks on the boots. The big 5 logo on the chest looks great. Sentai has used white gloves for a lot of teams but they really work well here. Its probably because of the colored guards on the back of the hands. I absolutely love the different designs on the helmets. Another detail I really like is that Yellow Mask and Pink Mask's helmets have earrings on them.
Kyoryu Sentai Zyuranger:
Nice and simple yet hard to forget. They have a very classic look to them. The white portions really complement all each member's color. The helmets have a lot of nice detail to them. I especially like the trunk pattern and tusks on Goshi's helmet. I love the belts for the Zyurangers. Something about the henshin device being their belt buckles really clicks with me. Out of all six, Burai's suit is probably my favorite. The gold works really well with the green and the gold Dino Buckler completes the look.
Kaizoku Sentai Gokaiger:
These are probably my favorite of the most recent sentai suits. I love the pirate hat sculpting on the helmets. It works really well with the jackets. The black spandex complement the colors for all six really. The gold stripes and belts work really well with all six colors. These suits really sell the pirate motif at first glance. My favorite suit out of these six is probably GokaiSilver's. I love the anchor design on the top of the helmet and the colored visor looks great alongside the silver suit.
Gosei Sentai Dairanger:
The gold portions of the helmets look great and have some really nice detail to them. The white portions of the main five's suits work really well with the gold trim and complements their colors rather well. I love the way the Dairanger emblem looks. Kibaranger's suit looks great. The black and gold chest-plate complements the white really well. I also like how the gold bands are outlined in black. I especially love the gold belts on all six suits.
Bakuryu Sentai Abaranger:
These suits look great together. The white spike patterns on Ryouga, Yukito, and Ranru's suits complement their colors rather well. The gold spike patterns on Asuka's suit complement the black really well. The black spikes complement Mikoto's white suit really well and I particularly like the gold trim on the chest-plate. It looks just different enough from the other 4 to stick out while looking just similar enough to feel like it belongs with them.
Choushinsei Flashman:
Mirai Sentai Timeranger:
I absolutely love the colored visors and its something I'd like to see done more. The black on the helmets really help the visors pop. The white on the suits complements each color nicely. The sculpted mouth pieces really suit them well. I like how the braces don't vanish when they're transformed and are actually worked into the arm-piece of the suits. The silver arm-pieces and belt buckle look great with the black on them. I love the design of the belts.
Choudenshi Bioman:
Like the Flashman suits, the Bioman suits manage to look simple yet hi-tech at the same time. The white really complements each color. I like the Bioman emblem, its nice and simple. It being integrated into the belt works rather well. The emblem looks great with the black on the belt. The helmets look really hi-tech thanks to the domes on the head with visible circuits. The circuit board pattern across the chest helps sell the look as well. The sculpted mouth-pieces on the helmets really mesh well with the rest of the suits.
Tokusou Sentai Dekaranger:
So yeah, those are just some of my favorite suits. There are more that I absolutely love but I didn't want the list to run too long. These are simply the first suits that came to mind when I decided to do this list. In all honesty, there really aren't that many suits in Sentai that I don't like.