I have to ask. What is 10M miles? 10 Mega-miles? That would be 10,000,000 for a combined total of 20,000,000 miles or, in computer terms, 1024x1024x20 = 20,971,520 miles. which would be the equivalent of riding 100,000 miles per year for 21 years. Did you really mean 10K miles each? :?: :?: :?:Scotty said:one persons opinion. Colorado made by California side car. Best buy for the money Cyclemate. Have pulled both over 10M miles each. Sold the Cyclemate when I had a chance to make a great buy on the colorado. To my knowledge there is nothing wrong with the other mentioned brands. Buy what you and your pocketbook like.