All my glues came in and figured I'd drop a quick review. Revell is my winner, the Tamiya is the big loser. Testors made a mistake discontinuing their old bottle style, but they were bought out by Rustoleum like ~5 years ago and the big corp gutted their product lines so penny-pinching at the expense of the customer isn't a surprise.
Tamiya Extra Thin
Bottle Type: Glass bottle with brush cap
Consistency: Very thin, evaporates quickly
Odor: Very Strong, made worse by the open pot when using the brush applicator and fast evaporation
Use: The manufacturer states to hold two pieces together and then run the brush along the seam, allowing the glue to wick between the parts. This really only works for traditional vehicle models, not infantry. The brush still works when applied directly, but the fast evaporation works against you.
Conclusion: I don't know where the stellar reputation comes from, because the odor alone is a disqualifier. I'd never recommend this stuff.
Revell Contacta
Bottle Type: Needle applicator
Consistency: Thin
Odor: Low to moderate
Use: Just touch the needle to the part and capilary action will draw the glue onto the surface. Sets quickly when parts are pressed together.
Conclusion: This will be my new go-to glue. I love the needle applicator.
Testors Liquid Cement
Bottle Type: Plastic 'needle' applicator
Consistency: Thin
Odor: Moderate
Use: The old needle bottle was better, the new bottle needs to be squeezed to get it started. Set time is the slowest of the group, which is fine for big models that have lots of contact points but can make certain infantry bits annoying (though the longer work time allows for slight adjustments).
Conclusion: If this still had a proper metal needle like the Revell I never would have bothered to try all these other brands, I would have just bought another bottle of this stuff and went on with my life.
Army Painter Plastic Glue
Bottle Type: Squeeze bottle
Consistency: Thick and sticky, will string
Odor: Very Strong
Use: The thick consistency makes it a good choice for small infantry, terrible for large models. Using a dabbing motion helps when applying the glue rather than trying to lay a bead like with the thinner glues. The stickiness is a boon when putting on small bits that need to stick right where you put them. Sets quickly.
Conclusion: I'll be using this for greebling infantry (pouches, magazines, etc), but won't be using it for general assembly.