Maxi-jets are darn good pumps. Lightweight, small and unobtrusive, noiseless, versatile. I actually have 6 in my 72gal! However, I am running a natural filtration system, and these PHs are my only sources for circulation in the tank.
The 1200 is the highest gph, and it gives you a nice thrust of water stream, but it is not the most powerful. You will either need to place several throughout tank, have alternative water movement going in addition to these, or get more powerful PHs.
The 2 for $35 is a deal at that site, but the charge for just 1 pump is not a bargain. Shop around.