I've been using a Wesco Stairking for about 15 years and it's used a LOT. I feel it's built much better than the Escaleras as it has a welded magnesium frame, not a bolted together aluminum frame which feels like it racks when twisted. The Wesco is much more solid and rigid. Also has a nice ratchet strap as opposed to a makeshift car seatbelt that I have seen on the Escaleras. The few Escaleras I've seen in action, the motor is extremely loud and sounds odd to me. The only repair I've made on my Wesco unit is replacing a master link on one of the chains, which was a simple bicycle part. I've had the same battery for the whole time and it's kept plugged in 24x7. I once moved 25 pins upstairs with a single charge.

Overall, it's been a great investment. It took a few tries to get the balance right as when you first use any of these stair-climbers regardless of the brand, you will feel like you are going to get pulled down the stairs with it, especially if you are a light-weight person. I use mine completely unassisted and I feel it's easier to use if you actually sit on the steps while using it and scoot your butt up or down one step at a time. It feels better balanced to me that way. My unit is just the base 66" unit with no forklifts, big wheels, extended toe plates, etc. I've been very happy with it overall.