Right now I run a stone plate tamper I've had for 4 years that's been great but I want to add another one for next season. Is there a # I should be looking for concerning minimum compaction force? I've found some great prices in the Northern Tool catalog. The two i'm looking at would both have the honda 5.5hp engine. One is a reversible with 6856 lbs./ force for $2000 the other is forward only with 3527lbs/force for $1050. My main question is would the larger compactor allow me to do 4" lifts? The reversible feature doesn't make that much difference since i don't do alot of walls, and its about twice as heavy as the other one. Thanks for any input.