OS 31 with the 10 foot cutting range and the mobile base is an excellent way to get into log resigning. You can easily lift the logs onto this very sturdy unit with a tractor or forklift or the winch. I only got the 13 1/2 hp engine, but it seems more than sufficient And it starts with one or two pools. I wish the choke was easier to use because you have to reach around to get it, but it starts and runs her easily turning the water on and off is easy setting the cut height is very accurate and easy and pushing the saw through the wood is much easier than I expected. It rolls very well on the metal rails. The only struggle was putting together. It took me quite a bit of time and had to redo a few things. It also was quite a piece of work to get the head unit up onto the mobile base they have it was all assembled. It’s tall and heavy. I ended up putting my forks through it and lifting it with my tractor and setting it on the tracks the hardware that came with the unit was excellent and very sturdy. I’ve had it sitting outside now for three months and there’s no signs of an issue with Rust. The unit is well completed. I have to admit the first day I put a blade on it. I cut an entire tree with almost no issue. It was really hard for me to put the blade on the first time because I didn’t fully follow the instructions but once I did, the plate goes on quite easy. It was a bit hard for me to understand how to adjust The pitch of the blade in and out a label or two would’ve made that a lot easier but once you figure it out, it’s super simple to keep the blade tracking properly. If anyone has any questions, let me know the company and the service provided during the purchase and install was outstanding and it came from Canadians that work in the company in Canada and did just a great job communicating I bought several accessory since I recommend everybody has at least two places to hold the wood against the stakes, I have three bars to set the log against and two to state to hold it against it. In that way a short log or long log stays put just fantastic. Couldn’t be happier.