Check out theinvisibleedge.co.uk, they stock Boker, Dovo and Thiers Issard, all come professionally honed.
A couple of things to bear in mind, most German manufacturers will use the same blanks its the grind and finish that will make the difference ie look at dovos 6/8 shoulderless Bismark, Revisor and Ralf Aust both use the same blank.
Also the difference between a £100 model or a £150 model might just be nicer scales or etching etc the razor itself is essentially the same.
No one can tell you which grind is best for you the only way is to try yourself and see which you like best.
Lastly you can always look for NOS razors, all never used just not manufacturerd anymore.