I never tried any of these, but operators have on sale also several Samsung UMTS phones.
There is also Sharp 902 distributed by vodafone.
And still some Nec 3G handsets.
Last but not least, the ever growing NOKIA 3G family. Currently on market we still have the first 3G smartphone based on Series60: the 6630. It is probably the best and longest selling UMTS phone. Also we can find its "sons" 6680, N70 and N90. And the current market hit: it's not Symbian but based on proprietary Nokia OS: the 6280.
Please integrate if you find anything missing