As a past Thiel 3.5 owner who played with these for 3+ years I would have a hard time recommending them in a 'hard' room, especially if it is a small room which doesn't allow for a lot of clearance from side walls and/or in which you cannot kill 1st reflections off the side walls.
These speakers are designed to be listened to when they are pointed straight ahead which will create a lot of reflections off the side walls if they are close or untreated. It is a personal choice of course, and a lot of folks would like the 3.6's, but IMHO they, and for the most part all the Thiels that I have heard, are too critical of set up and amplification for me to want to go back to them, or recommend them to someone who has not personally already experienced what they have t offer. I've not heard the VMPS 30's, just a lot of favorable comments, as I'm sure you already have.
FWIW.
These speakers are designed to be listened to when they are pointed straight ahead which will create a lot of reflections off the side walls if they are close or untreated. It is a personal choice of course, and a lot of folks would like the 3.6's, but IMHO they, and for the most part all the Thiels that I have heard, are too critical of set up and amplification for me to want to go back to them, or recommend them to someone who has not personally already experienced what they have t offer. I've not heard the VMPS 30's, just a lot of favorable comments, as I'm sure you already have.
FWIW.