I'm looking at a rough surface power chair for me to use outdoors. Country lawns, fairs, fields, ranges and even woods and stream river banks. I'm having more issues getting around with the walker and am looking at the action trac chair currently. This chair is on rubber tracs and is supposedly 4 MPH and 10 mile range. I'm okay with the 4 mph limit but would like a little more range. (possibly add a second set of batteries ) Also since this is tracks it wont be used indoors per say so a gas version might be even better. Another plus to this unit is its American made. Ive worked on power chairs for friends in the past and found them to be wanting in durability over rough terrains. Ive looked at several on the internet and like the looks of this one the best.