I've recently had the Hilti on trial. In my opinion it is not a true plunge saw but more of a hybrid. It can plunge but it is not sprung like the TS/Makita so you have to physically pull it out of the cut. It also has a traditional guard system that has to be pulled back before you put it on the track. However it does have a bed on both sides of the blade and the ability to lock the blade down means it can be used like a normal circular saw.
Personally, and I realise this could be blasphemous on a Festool forum, I went for the Makita SP6000 and certainly haven't regretted my choice yet. I've been using it to cut 18mm marine ply and the quality of the cut is superb, the saw is nice and quiet, the electronic brake is a nice feature and dust extraction is superb , admittedly attached to a Festool CTL mini!
For £330 inc two 1400 rails, 2 connectors and a rail bag it was very good value too.