Got MS441 and 36 inch Logosol bar with Logosol ripping chain. I also use the Big Mill basic for smaller trees, usually with MS441 and 30 inch Sthil bar and Granberg ripping chain. It all works ok but has a huge number of locks and clamps to make it work reliably accurate.
The LSG rails seem a bit flimsy and if sawing on my own, the start and end of each cut can be tricky because only one rail is supported by the last cut until you get deep enough with the cuts for the following rail to give support.