Uhm, well I use FreeServe Unlimited as my number one ISP and almost without fail it's been brilliant - reliable and fast (admitedly I am using ISDN).
Indeed the only time when I get a problem connecting (i.e. it might take 20 seconds instead of the normal 3) are during the afternoons when all those budding net boffs are surfing those 'educational' sites that are so prevalent upon the net (shhhh wanna by a hyperlink, nudge nudge wink wink say no more ?!).