There’s a clear winner here for me.
Back in 2009, I bought a heavily discounted Marin Rock Springs and was told that I needed a medium size. I loved that bike, but it was way too short and I regularly smacked my knees on the bars. On the descents it was utter magic, so I gave the frame to my missus and bought a Wolf Ridge in a large size…
Oh dear.
Mostly, the extra size was added to the seat tube and headtube, there was precious little extra length, so Marin supplied the bike with a 90mm stem. No matter what I did, I couldn’t get the front end of the bike to work for me, the steering was completely numb and the geometry was noticeably different to my medium bike with a steeper head angle and taller BB. The Fox RP23 was a pain to get at thanks to the linkages and I ended up throwing a fortune at the bike. In the end, I ran a sticky front tyre tubeless at a low pressure to get some feedback in the front end.
Matters weren’t much better at the back. The suspension action encouraged out of the saddle attacking, but traction was very spitty which wasn’t great on slippery climbs. Granny ring climbing was an object lesson in elastic suspension, the fitting of a Fox CTD helped somewhat, as did the attachment of a dual chain guide.
It put me in A&E three times in the four years that I owned it.
I eventually replaced it with a Spesh Stumpjumper 29er, which is beautifully balanced, has suspension which works and fits me like a glove.
My old Rock Springs is now ridden mostly by my stepson, who loves it. If only they’d upsized the frame properly.