In the beginning I used T&H oil, but it's not that great in my honest opinion.
Now, and for some months already, I've been using Proraso pre/post. I got the 500ml tub, which actually was on sale at Paul's (Connaught) eBay shop. Few months back he had few tubs that had been damaged (for some reason) and had cracks on the actual plastic container. He put them up for auction just to unload the 'seconds' stock and the one I got cost me about 6 quid excl. P&P (normal price is 18 quid)...
There is also the Proraso pre/post 'white' (aloe vera and tea tree if I'm not mistaken), this is almost the same but for more sensitive skins. The original pre/post ('green') stings more, the menthol/eucalyptus element there is much stronger.
I now have another product, Italian as well, the Santa Maria Novella pre/post creme. This is a $60 for 100ml porcelain jar, pomegranate thick creme, lovely stuff. I use it as after shave creme, does magic with the -4 deg. C we have here these days. Too expensive though to be used as pre, me thinks...
Regarding Myrsol, Gifts & Care stocks it, they carry almost all the Myrsol range, 180ml bottle is about 12 Euros. The Myrsol pre/post balm is (reportedly) the most popular product in Spain. I'll PM you if I finally decide to place an order with them just in case you want a bottle of it, I'll most likely have free delivery with the order I may place.