Hi and welcome Slag52.

The more info we have about your needs, the more able we'll be to help. What exactly do you want from your tile mapper?

I've used Dungeonforge. It's basic, but it produces useable maps quickly and comes with a host of downloadable tile elements. If you use it in 20x20 pixel format you may be able to produce your own tiles with very little artistic talent. If you use it in larger format, I believe you can import tilesets created for Dundjinni, which is the other tilemapper I would suggest.
Dungeonforge is free, Dundjinni isn't.

I haven't used Dundjinni or Maptools myself, but I think they and Dungeonforge all do pretty similar things - hence I'm curious to know the nature of your dissatisfaction with Maptools.
Viewingdale is another alternative to Maptools, but again, it's not free.