We bought ours at Lowe's. There were several things involved in the decision in getting this one.
1 - The one we got had to fit in the place we were putting it. Said no to several that were bigger than the spot.
2 - Our inverter/converter at the time was 1500 watts so it had to be less than that. It ended up being 1350 watts. (We now have a 3000 watt inv/con so I guess we could go bigger if we really wanted to
3 - Also wanted some storage with it so the one we got has a storage area in the top. Hide stuff inside and also put the printer/copier on top.