Well, you call Ty, tell him the speaker you want and then give him your credit card number. ;-) Seriously, I had some reservations when I bought my first pair of Taylo 7Us, but none at all when I got the Linbrooks. Like many people here, I have limited opportunity to demo a lot of high end speakers, so the starting point was Audiogon feedback and other Tyler owners.
However, a larger factor for me is that I've found it's extremely hard IMO to get a good sense of what any component will do based on a showroom demo. The gear upstream, room acoustics, speaker placement etc. all have a large effect on what you end up actually hearing. For example, I've heard B&W 802s in several different demo rooms in a short period of time and there was a significant difference in how they sounded. How a new component will sound in your setup, in your room can often be a semi-educated guess. That's not to say that showroom demos can't be useful; I've A/B'ed CD players and other components in the same dealer system and it helps reveal different characteristics.
If the dealer will let you take something home for a test drive in your system, that's the best way to go. Companies like Tyler that have great, no-hassle return policies essentially let you do that.
