I have 4 electric units and also operate propane lifts. The electric units that might be applicable to you are Yale (newer), Raymond (very old) and BigJoe (old).
Is it fair to assume that the lift will be used for short duty cycles? My lifts may be used for hours on end and over 2 shifts some electrics can manage that, some cannot.
The electric Yale I have is a stand up narrow aisle full featured unit, I've had a couple Yale units they are very high quality and stand up to daily use with long duty cycles. The Raymond is the oldest unit (mine is 25+ years old) and the one I know the least about but the brand is a premium brand. Raymond makes a wide range of electrics in all configurations, many of my friends operate Raymond units. BigJoe is a lower priced brand, this is my second BigJoe, it is over 10 years old. BigJoe is an economy brand but it works pretty well with modest duty cycles. It is one of the walk-behind stradle units. Doesn't hold up or have the capacities of the Yale units. I would say it would easily meet your needs if you got one with the proper masts.
You say you are NOT looking for a "stradle" unit? Those are typically the most economical. Are you looking for a stand up riding unit? Are you looking for a sit down driving unit? Why can't you use the 'stradle' type units?
Do you need the added fork extention feature? Whatever you buy, get the "side shift" feature, that is VERY useful and is standard on everything but the lowest priced units.
If you want to get really fancy, and spend a lot of money, look at a Bendi unit. We've got one of those too. I suspect it will be massive overkill for your needs but is more fun to drive than anything else I've ever played with since it is an articulated fork lift. Its sort of like driving a video game.