It seems you are leaning towards the 2 lowest priced units for consideration and maybe concerned about extra features like a battery discharge indicator that may may cause you "extra" maintanenace issues. Some of these extra features will save you $$ & a lot of headaches in the future. For example, the battery discharge indicator is equal to a fuel gauge in your car. Would you buy a car without one? When would you know when it is time to recharge the battery? You can overcharge a battery for sure (batteries have a limited number of charge cycles the faster you use them up the sooner you'll need to replace)

If you are looking for a piece of equipment that will provide you will extened service life take a look at things like vehicle weight, lift cylinder sizes, load & drive tire sizes, amount of lift, battery/charge type and specifications (like battery amp-hour capacity) being offer - flooded battery, maintenance free, industrial type, etc.

You local sales people should be able to give you additional information on their proposals.