I'm now on my second plane a Bonanza F33, my first was an early arrow1, There is absolutely no comparison between the two in any way whatsoever.
I would say if you can afford it, buy a complex type. You will soon get bored in an Archer, they are just not fast enough for serious touring. Two friends of mine recenltly purchased a Trinidad and a Tobago respectively (both new). I should say TB200, The guy with the fixed gear is now regretting his expensive mistake as the depreciation will not really allow him to sell it for some years yet. on the other hand, the guy with the Trinidad has now comfortably learned to handle the extra performance and loves it.
As for running costs, you should allow 10% of the purchase price to put things right in the first year or two, thereafter, if you fly around 100 hours per year your budget is going to be in the region of £10 - £15K which include fuel.
I think £3500k finders fee is extortionate. I'll do it for £2k!!
Mail me if you need any more tips.
GG
