Here are some points to consider and will allow you to decide which is more preferable.
Keiser was the original bike with consoles to show power, and are still the only bike with an objective resistance number. They’re “bike in the rear” design is unique.
Keiser. A new handlebar design for the Keiser M3 should silence complaints from some smaller riders who had troubles with bike fit. They have an established power console and also numbered resistance which lots of people really like.
An award winning and highly innovative indoor cycle, the Keiser M3 Plus is one of the most recommended spin bikes on the market, and for good reason. With its exceptional, club-quality features, this particular product might not be on the cheaper side, but then again, it has been designed to last for life. Best of all, this machine delivers exactly what it promises and several users have claimed to have lost a staggering amount of weight after using this bike for just a few months. More importantly, though, this item is surprisingly easy to use, even for beginners. Extremely versatile, it can also help you burn up to 1200 calories per hour with the exact amount depending on certain criteria such as your gender, weight and selected tension level.
Unlike other exercise bikes, this particular spin bike is virtually maintenance-free, which can very easily help you save up on time and expenses. In fact, this particular bike has been developed after 10 years of meticulous research as well as manufacturing experience, which makes it one of the company’s most prized products.
Now it is RealRyder time: Indoorcycling.ca found the RealRyder® bikes hard to ride if you want to STAND. They are mostly suited for SITTING. If you’re ok with that then you will enjoy the RealRyder Bikes. But if you require lots of standing then it will be uncomfortable and unpleasant.
In addition they are pricey given that they don’t have a COMPUTER, the most expensive out there. They do not have what the Keiser M3+ bikes have which is a computer. RealRyder wants more money for the computer. So one is left riding without knowing their RPM or their Watts or even the time on the bike which is ridiculous for the price. http://www.realryder.com
Let’s conclude with a review that I found quite accurate: Are you kidding me? 2k for the latest “different bike”. I remember when I was a teenager and Schwinn came out with the “Swingbike”. It seemed pretty cool for about a week Then I wanted to get back on my “Real” bike where the frame wasn’t hinged in a half a dozen places and pivoting all over the place. I’ve taught a lot of Spinning classes and a good percentage of the participants are NOT cyclists. It’s hard enough to teach good form on a bike that doesn’t flop all over the place
The M3 is the first commercial grade indoor group cycle to incorporate magnetic resistance. This means no pad/pads contacting the flywheel, which translates to less maintenance
The lever to change resistance levels is crisp and precise. The saddle looks a bit bigger than others, but it’s really easy on the rear end. Plus the optional computer gives wattage output as you add resistance
This is Keiser’s website here