This is where this forum shines... Sip is a quality company. They sell hi end parts, and have pretty fair prices. I would trust they are good mirrors. What I mentioned about shining: I have been looking for "drop down" mirrors, and have only found garbage. I will be looking for those elsewhere cause in the states we have to order 100.00 min. or maybe more now. I personally think it's the best set I've seen. Maybe you wont have to have a min. order? Or maybe order three pairs cause I could use two pair. I'd pay pal first for them...
I guess that's a yes vote from me. They're good.
I think Those, and a pair of bar end mirrors gives you the most coverage in the most important places.