In defence of Boogie - nicey, I think he is refering to a number of good points:
1) Many things are done differently over in the US (not saying they're wrong!). If you plan on doing a UK IR then you'll have to 're-learn' UK procedures which will take a good few hours.
2) Air space in the UK is much more complicated. For me to go in a 2 hour nav trip from Barton, I will need to do at least 1 CTR transit and 1 MATZ penetration. Not to mention the Low Level route and Advisory airspace if you want to go over water. There is ALWAYS class A (MAN TMA) above you. The midlands are the same and London is even worse!
From what I gather , this is not the case in the States. I know of many people who went hour building in the US. By their own admission, great views, but masses of uncontrolled airspace and more VORs than you know what to do with.
As someone who is currently hour building, these are the reasons that I decided to pay that bit more to get my hours over here.
And the beer is crap there too!