Depends on what's in the store in your size the day you go in. Most of the boots in Bicester are the pro-boot lookalike but these are 'selling fast'. The next batch will then be the Phrabos boot (lowe lookalike), then it will be a mix until late 07.
If you have a genuine preference tell them at Chillwell and they will do doubt help if they have both. The word on the street is that its personal preference as to which you works for you. Both pretty good boots as issued boots go.