Well done from here too. And well done for going the supermoto route; the most fun I ever had on bikes was on my old CCM 644 DS.
This info is a bit out of date cos i got out of biking about 5 yrs ago but for what it's worth: Huskies and Bergs are too temperamental (though I stand to be corrected on this by Aries) and the Honda is really a commuter dressed up like a SM. The LC4 is a great bike but pricey and the Suzi would be cheaper and slightly less 'lairy' but easier to throw around. Be wary of 'proper' motards (YZF400s et al) they need rebuilding a lot if you use them hard; it's essentially a race bike. If you see a good looking CCM 404 then you could do worse; it's the same motor as the DRZ and they got very good reviews when they came out. Some people will tell you to avoid CCM due to build quality but mine was great. The 644 was cast Iron and you could throw it down a lift shaft and it's keep going.
Oh and make sure the first things on your shopping list are a short front mudguard and bark busters if it doesn't already have 'em
All this has made me quite nostalgic... I'm off to cry into my tea. Have fun!