I bought my BT Brand New in 1998 I loved the boat and we ran it from Grand Haven to Milwaukee or Chicago at least 6 times a year
I bought it for the room and comfort (We traveled almost every weekend with the boat)
The reason for the change from 43 to 46 was to extend the swim platform over the drive area after they had first used extension boxes and liked it so they extended the back of the boat under the platforms on the 43 when they built the 46 they just moved the platform back out over the protruding drives
Funny thing the early 46 could not stay level and you had to work drives and tabs to get it to run level (I think this has been resolved now ) I ran the boat in seas no one should have been out in and was a great boat!
Unfortunately I think the owner of BT has lost his way The boat has really had no significant changes in many many years. The 46 and the 43 were really not allot different from one another If i were buying one today i would go looking for a 43
Nor Tech is a good alternative and has the best of the modern upgrades. Terry Sobo was the Sales Manager at BT when I bought my boat and has been running sales at Nor Tech for many years you will find no better guy to deal with
I do not have an upgraded acount here anymore but if you do a search here you will find pics of my past boat