Just one point: IMHO, it would be advisable to stay away from the Ambroid cements. They contain methylene chloride, which continues to be investigated as a potential human carcinogen (There appears to be some very good correlational animal data to support its inclusion as a human cancer agent.).
In addition, methylene chloride is metabolized into caboxyhemoglobin (Cohb); inhalation of this material is the same as inhaling carbon monoxide. Testing has shown that Cohb levels are increased by several percentage points in people who don't smoke or who weren't previously exposed to CO, and increases by a significant margin in smokers. Increased levels of CO in the blood does have the potential to cause cardiac irritability.
Because of its low vapor pressure, methylene chloride (also called dichloromethane) evaporates unbelievably fast, and is therefore inhaled in higher quantities more quickly as compared to other solvent-based cements such as Testors liquid cement.
Lastly, methylene chloride is one of the primary ingredients in paint removers (the other being methanol). Getting methylene chloride on your skin or in the eyes does have the potential to cause significant chemical burns.
BTW, I don't ever remember having a seam fail on me when using Testors liquid cement.
Just thought I'd toss in my 2 cents worth....
Gip Winecoff