Ordered one of these as I needed a little more space than my previous board had. Thereore I'm inclined to directly compare the two manufacturers. My previous board is from the company that originally made this style of board and charge a little more for the product - if you're looking at buying a Palmer you've probably done plenty of these comparisons already.
One of the biggest differences between the two is that the Palmer has an edging strip on either side of the board. This caused a bit of trouble for me when rigging the board up. Due to the edging strip (which the "other" board doesn't have) I had a little less room than I'd estimated. I've just about managed to fit everything in - a Dunlop Cantrell Wah, Puretone buffer, TC Polytune mini, MXR Phase 90, Xotic Ep Booster, Boss FS-7, Line 6 M5 + expression pedal and a TC Alter Ego x4. At the moment the TCx4 isn't quite secure as one side is sitting over one of the edging strips I'll need to look into this before doing some serious gigging with the board.
On the positive side, having the adjustable rails means I've been able to set it up very neat and any patch and power cables are secured out of harm's way. I couldn't get the power supply fixings (elastic straps) to work for me so I've gone back to using cable ties to secure my Hotstone Deluxe underneath the board. Also, the softcase isn't quite as nice as the "other" manufacturers. It's well padded but the quality of the fabric isn't as robust and the same goes for the handles and strap. Time will tell how this will stand up to gigging. I'm quite careful with my gear so it should be okay.
Overall, I've got a neat looking board on which I can comfortably access all my pedals and it's worked out at a little more than half the price I was planning to spend on the "other" manufacturers model. A good alternative if you're looking to save some cash to spend on more pedals!
