Pros

• Warm for paddling on a cold day, and gives you some protection if you capsize
• Inexpensive
• Tough and reliable. You don't have to worry about a ripped gasket
• Works well for swimming if it comes to that
• Can wear a windproof jacket over top to make it warmer

Cons

• Too hot in warm weather
• Clammy because it doesn't breath
• Uncomfortable and will restrict your movement somewhat
• May not be warm enough for a very cold day
• Hard to adjust for changes in air temperature, can't layer very well
• Don't keep your neck and head warm on a cold windy winter day

Pros

• Get one with wrist gaskets if you want to avoid water trickling down your arms
• More comfortable then a wet suit
• Can layer underneath to adjust for comfort
• More versatile than a one piece suit. Can take top off when too hot
• Will keep you dry in most conditions, as long as you don't go for a swim
• A good dry top is made of breathable fabric so less likely to get wet from your sweat

Cons

• The cheaper ones don't stay waterproof very long. The fabric is not durable
• Not good if you come out of your kayak too often
• Don't give you effective protection for neck and head for the colder days

Pros

• Comfortable for paddling and you won't loose much heat if you go for a quick swim
• Great for a longer swim as long as you are wearing enough insulation under it

Cons

• Neck gasket is not comfortable
• No protection for the neck and head on a colder day, although if you get one with a hood that will help
• Being one piece you can't wear top of bottom seperately

• Excellent neck and head protection to keep you toasty in the coldest windiest day
• Waterproof hood is perfect for rolling or keeping out the wind and spray
• Comfortable. No neck gasket, no skirt tunnel around the waist. everything is loose fitting
• Don't need a separate skirt
• Less water gets in the kayak from waves, or rolling because there is no opening above the skirt
• If keeping your hair dry is important to keep you warm you will appreciate the tuilik
• Perfect for those who want to push their skills and learn to roll, because it allows unrestricted freedom of movement. Makes it much easier to roll and brace

You can get more details on the "Tuilik" here.

• Will leak at the waist if you spend too much time swimming