I'm in Edinburgh, using a £35 Moteck 2100a off ebay with a 88cm dish (which also cost peanuts on ebay), and it's entirely unbothered by anything weather related. Besides, at this price if it breaks in a few years, so what - you could buy 5 of them for the price some installers charge just to get out of bed. Here's a sample system:
http://***********/y4ezsj
Can't remember if that's exactly the seller I got it from, but there are a few doing similar setups. Add in a Technomate 1500 receiver and you're sorted.
Like Rangers above, the New Year winds (unbelievable weren't they?) blew the dish itself off alignment, but the actual motor itself wasn't damaged in the slightest and the gearing is still working perfectly. Just needed a quick loosen, nudge west a bit, re-tighten
Forgot about installers, just do it yourself, it's easy. I knew nothing about motors (or indeed satellite dishes) at all when I bought mine. Forgot satfinders and all that jazz, just get up there with a mobile + handsfree and have someone phone you with the reception quality. If you're watching via a PC card, you can use DVBDream and it will speak the signal quality. Remember and cover the nuts/bolts with silicon spray so you can loosen things in future, else it might rust solid.
ps a 1.2m dish?? Can't see why you'd need that. If you have a particularly channel/sat, just mention it and I'll tell you what signal quality I get - the likes of both Astras, Hispasat, Hotbird are all 100% quality on my 88cm. Hellas and Turksat are fine also. At last count there's 6500 tv channels receivable, and a whole whackload more radio. Maybe a few sats are just out of reach - some of the Nordic aimed ones are just too low to be watchable - but unless you speak Swedish this is unlikely to bother you.