I read a tool comparison in Fine Home Building magazine a few years ago that said the Rigid planer from Home Depot was the best deal for the money. I had never owned a Rigid brand tool before, but based on that review and the ease of blade change in the review, I bought one.
Overall, it doesn the job, but I'm not impresed with it, nor would I recomend it. For the money, it's probably about as good as the others, but this is the only one that I've ever had or used. The problems with it are the height wont lock into position. With the lock set, it will still move and work it's way up.
It doesn't pull the wood through evenly, so sometimes I get a straight cut, other times, it will come through at an angle, then sort of bind up and then straighten out, before going all the way through. The finish cut is affected by this.
There is a noticable difference in cut at the end of the board. You pretty much have to through away the last six inches of the wood since it will be at a different height.
Blades are easy to change and about half price on ebay for brand new compared to Home Depot.
I don't use it enough to justify a better one, but when I do use it, I wish I had spent the money on something better.
Good luck,
Eddie