I use a lot of these products for my pain from arthritis and injuries. There are several available on the market that are pretty good but one stands out ahead of the rest. Some produce a hotter sensation, work faster and last longer. Others can give you more product for less cost. None of the top 3 are bad but have various advantages and disadvantages.These comments are based upon my opinion only and from my use of the products.Number 1:Biofreeze Professional is the strongest and best of the three pain reliever gels reviewed here. It is easy to apply with the rolled ball applicator. You do not have to use your hands. It instantly begins to get hot and it is much hotter that the other two gels reviewed here. It’s power comes from 5% Menthol and it’s warming effect lasts at a higher level for me for several hours. It is the longest lasting gel I have used. Even taking a shower 8 hours later makes it rewarm up on your skin. It is also the more expensive product of the three but the effects for me are much better. It gets me so warm, so fast that I have to avoid a draft of air, after I apply it, or else I get a chill.Rating 5 stars.Number 2:Regular Biofreeze is a good product with 4% Menthol. It has the same effects as Biofreeze Professional except the professional grade is stronger and better. It is easy to apply with the rolled ball applicator. You do not have to use your hands. The warming effect occurs quickly and does a good job. The effect, for me, does not last as long as the professional grade of Biofreeze. It is also more expensive per ounce than Asorbine Liniment but is easier to apply.Rating 4 starsNumber 3:Asorbine Veterinary Liniment Gel works fast and has a good warmth factor. It doesn’t seem to last as long as Biofreeze Professional. It is less expensive than Biofreeze product as you get more ounces for your money. It does not take a lot to cover your injured area. For my big knee I use a small amount the size of a small to medium sized marble. It easily rubs in and soaks into your skin. It has a pleasant minty smell that diminishes quickly. Wash your hands thoroughly after applying and do not touch your eyes. This product does have 4% Menthol as the most active ingredient.Rating 4 stars.These are all good products. For strength and lasting effect the Biofreeze Professional is the best performer. You can’t really go wrong purchasing any of these top brands.I hope this comparison is helpful for you. Pain is something that no one should live with and finding the right product for your use is important.