Hi,,

1> Guide rollers are only used to guide equipment in aisle.

2> If your volume is high then , VNA with operator up will be best & economical solution.

3> Always prefer equipment who can provide after sales support.

4> With high reach & operator up travelling speed will reduce , however this is the best possible way to utillize ware house area.

5> only issue might be ware house floor area, as VNA requires absolutely flat floor..