Well I had to go to Argos for something else and 70 notes is in my impulse buy bracket, while 170 isn't.
First reactions, the case is a bit flimsy and wouldn't survive rattling about in a van, and you only get a 32 mm plunge saw for wood and a wood/metal sector saw (plus the delta sander, but I already have one of them). From the agents web site the range of extra blades is very much more restricted than the Fein but still spent another £80 having one of each. Build quality looks OK, like say Ryobi somewhere in between Ferm / Silverline and Makita / De Walt.
Doing a bit of kitchen fitting at the moment, used it for a couple of plunge cuts into wood, quick and efficient but nothing I couldn't have done a bit more slowly with a chisel.
One of the jobs was putting a timber edging on the back edge of a peninsular unit, decided to leave these at 44 mm on the 38 mm worktop to save planing and to make the tops look a bit more substantial. Came back from another job to find SO admiring my handiwork, but smirking somewhat. Yes, the cutlery drawer on the back side of the peninsular no longer opens. Doh! First job in the morning, use the sector saw to take 1 mm off the top of the drawer front. I guess this will justify the Bosch on its second use just for buggeration factor alone.
I'd not dispute that the Fein would earn its keep for a pro, but for me it will probably only come out once few months, and the price difference would buy me an Axminster morticer. It's a bit like the rotozip, very useful if you have the application but how often would you use it. I think we are paying a bit of a premium for the "blade" idea on what is basically a delta sander. Perhaps I've been spoilt by being able to get a perfectly functional random orbit sander for a tenner or an adequate biscuit cutter for £30.