Our experts have tested every model of Wattbike smart bikes, and its Proton indoor bike, with $500 off, is at its best-ever price

Wattbike holds two of our six recommendations for the best indoor smart bikes, and the Wattbike Atom is our best overall choice. However, at over $3,000, it's a fairly hefty outlay if you're getting into indoor riding.

The Atom's sibling, the Wattbike Proton, is an equally impressive smart bike performer, and right now, Wattbike US has dropped the Proton to its best-ever price.

David also noted that it strikes a balance between functionality and practicality, awarding it a 4 out of 5 star rating. He did point out that, as you'd expect at this price, it lacked the tactile precision of more expensive smart bikes, including the Wahoo Kickr Bike. However, its overall build quality, connectivity, and value, especially at this price, made it stand out in a fairly crowded market.

For UK Wattbike Proton shoppers, there is an equally impressive £300 discount at the moment, and the Proton is available for £1,495. Below you'll find all the details for both the US and UK Wattbike deals, and, as with all the best cycling deals, it's only while stocks last.

The Proton is not only our choice as the best smart bike for households with multiple users. It offers easy adjustability, takes up less space than its sibling, the Atom, and, if needed, can be moved easily with its attached wheels.

Wattbike is also a trusted trainer used by some of the most recognised sporting organisations and teams worldwide. It includes Team USA Cycling, and big names in US sports like LeBron James of the LA Lakers, Lionel Messi, 50% of NFL teams and 100% of NHL teams – so it's fair to say Wattbike has a fair pedigree, trusted to deliver genuine fitness and performance improvements across professional sport.

Therefore, accuracy and a realistic ride feel are key requirements, and the Proton delivers this with ease, almost on par with far more expensive rivals. The gradient simulation at 25% and a peak power of 1800W is comparable to the other models featured in our buying guide. We also found it to be highly accurate, comparable to those more costly machines.

Paul Brett is a deals writer for Cycling Weekly and has been cycling for as long as he can remember, initially catching the mountain biking bug in the 1990s, he raced mountain bikes for over a decade. An award-winning photographer, when not riding a bike, he can be found at the side of a road world championship or a cyclocross track shooting the action. Paul was the founder, editor and writer of Proper Cycling magazine, and he's travelled the world interviewing some of the top personalities in cycling and writing about some of the biggest cycling brands.