Pros: Overall Quality, Durability
With TI, quality wathever is the price range
'preaching for my church' Thiers Issard is a very small manufacture who have invested a lot of money in developping a specific steel, the C135, progressively introduce in all the range. Better edge retention, a step further in fine grain polishing, rediscovering old sizes and shape(Le Grelot, pierre thiers, etc...) the important is not there : wathever is the TI razor you buy, it have its own personnality, will give its own comfort and sharpening, care, procedure, to become your very own one. With time, you'll discover heavy blades, near wedges, old english ones, tasteless spanish vintage, singing blades to the limit but, finally, i'm sure your Thiers Issard (if well maintained) will b stay your closest daily razor.