thanks for the info

i'm not familiar with the mafell saw, i was planning to pick up the 10" big foot actually, my co-worker suggested that we try for a saw that will cut at least 4" so we can cut most joists and braces in one pass and most principal timbers in two passes.......
mafell does have a good selection as far as depth of cut goes, but yes the saw i'm considering is 30 pounds.
How much does the big foot weigh?(i don't see a weight on their website)