If you go over to the FOG, you will see a lot of discussion about the Kapex.
As always, most love it and some really hate it, the primary problems (in my view) being failed motor problems which no one has come up with an explanation for and of course the expectation of 'perfection' for a saw costing as much as it does.
Mine has been in service since 2010. I've checked mine for every problem listed at the FOG and found it be without except for some of the inconsequential casting foibles.
Essentially, if one were to compare it to the other top of the line models from the 'major brands' for this type of saw feature for feature the Kapex might be considered a notch above, how to place actual value to this is the decision a potential buyer makes.
Does it somehow 'cut' better than the others, not particularly if all is setup and used the same.
In my view, it is not a particularly robust saw, it is meant to be a refined trim saw. If you're going to expect it to frame houses or build decks all day and throw it into the back of the truck at quittin' time then perhaps look elsewhere. Not saying one couldn't just saying I wouldn't.
What I like about it
Did not have to initially upgrade the blade, the supplied blade (rebranded Leitz I believe) is excellent.
Very well 'tuned' from the factory but I have tweaked it some over the years.
The sharp lasers, not everyone's 'must have' but I like them and once dialed in the cut line is 'there' on both sides.
The cut controls, bevel adjustments are fantastic, miter controls are similar to other brands.
Compact and lighter weight, nice to have when going to the job site..... (can throw it even further into the back of the truck )
Smooth action through out, with maintenance remains so, mostly just dust outs and minor lubrication.
Clamp, surprisingly I use it quite often, the best of any brand I've witnessed, don't think I can even find the ones for my other saws.
It came with the 'angle finder' don't use it often but comes in handy when needed, similar to the Bora so value wise add that to the cost comparison.
I added the extensions/crown stops, should be included, cost extra but like them.
Dust control, not 100% with my Fein or Festool vacs but best I've witnessed compared to others.
The adjustment for depth limiting of cut is great, not a feature used a lot but it is there and very accurate.
Flying cutoffs and kickback is not particularly better or worse than any saw I used and can be mitigated with proper use and auxiliary fences.
Probably a few more items to the list just can't think of more for now.
What I don't like
The price (of course). I have been very pleased with my kit of other Festools in terms of quality and expected longevity, adding the feature set of the Kapex I considered the 'investment' worthwhile.
The potential for the motor problems some have experienced. Frankly, before reading about them I never considered this. How many and under what circumstances it occurs is unkown to me. Some have bailed on a perfectly good saw based on 'fear', some are waiting for a solution before buying. One guy is paying to have his saw fixed despite multiple failures just to get it back. (go figure, eh?)
I'll just keep plugging along with mine fully satisfied with it's performance and it's still going strong after six years.....we'll see.