I might as well throw my $.00002 worth in to the post. I purchased the old PC cutter, it is an upright style, being an early adapter has it's costs. I still use it for certain situations that I find I like it better for. I added a small cheap one the does small biscuits it too is an upright style and it has come in handy on more then one occasion. I added a Bosch inline style at a really good price..... I also have a table mounted one but that is a whole different story.
The Bosch is used most often but (now we are comming to the reason for the post) it tires my hands out. (I have some issues from being a desk jockey and using computers for years.) I would say one of the importain issues is how the tool feels in your hand. In fact that goes for all tools. If it doesn't feel right I would look to a second vendor. I tend to have a lot of PC tools, I have only one "yellow" tool, a drywall/deck screw gun that seem to fit my hand well.
I love the way biscuits work, but for somethings I am now using a Kreg jig. It will never replace biscuits but it has it's advantages as well. I sold my doweling jigs but they have been a few time where I wish I hadn't done that.... Even biscuits are not the best in every situation.
So that's my take on it.
Ed