I have ordered a significant amount of equipment from Proviation in the last 6 months and have always been impressed. In particular, they were very accommodating on recent delivery requests for Sennheisers and personal gear to arrive downroute and this was handled very well indeed with liaison with our handler. I have always found them to go much further to offer stand out support than other retailers.
First dealing was in warranty repair for my Zulu 1 which impressed me as they collected the set, fixed it in Germany and sent it back to me within around a week I think.