Well, been gassing for a Vintage Thunderbird Pro in alpine white since I first saw them. Something about the white and chrome just grabbed me visually. Always toyed with the idea of getting a tbird eventually, but it was this white vintage pro that pushed my GAS into action.
Always been scared of thunderbirds due to the internet chatter of neck dive, and size of the bass.
I was hesitant without trying one so I went to my local GC a few different times to see if they had any. Today, they had the Pro IV which i know is not the same, but I figured i'd try it out sitting/standing with a strap and it should give me at least a point of reference.
1st observation, it isn't as "big" as I perceived it to me, or I am bigger than I thought (and not in a good way..

). Let's go with the former....
2nd, while it does want to neck dive, I found that with the body shape my comfort position is actually with my arm resting on the back part of the body so it was actually pretty comfortable. I would create and install in strap extender regardless to help position it a bit more like my others anyways and that should hopefully help with any dive, if there is any. Lots of folks are saying with a good wide strap, which i have, there is no dive (fingers crossed).
I found one on Reverb that caught my eye that was a fair price, had money burning a hole in my paypal account and I pulled the trigger...
I'll share pics once it's in my hands!