You mention that you would like to stick with the "tactical" looking chassis type rifles. Those are very popular today & lots of options.
One note you may not have thought of if you don't have to have a chassis rifle:
You can pick up some really good deals on TacOps rifles in .308 since that caliber is not very popular. If you plan to stick to only shooting the ammunition they are built for (usually FGMM 168gr), they will shoot amazingly well.
Barring that I would go with an Accuracy International.
There are lots of choices.
You can of course go top of the line AX (post 2014) probably in the $5k to $7k range
Then there is the AT ones which would be in the $4k range
Then there is the older AX ones (pre 2014) which would be in the $4k range
You could go old school with the AW ones (if you can find anyone willing to sell), probably in the $4k to $5k range
There are also really good deals to be had on the AE MK II and MK III models, probably in the $2500 to $3k range
The AI rifles are very solid, hold their value exceptionally well & are very easy to reconfigure.
If you have a AX or AT made 2014 or after, you can change the barrel in about 5 minutes with a torque wrench
If you have an AW, AE or an AX made before 2014, you just need to have / borrow the barrel change kit & it's 30 minutes or less.
All the other choices you mentioned are excellent options & it would be hard to go wrong with either one.
The main advantage to the Accuracy International is you can get new barrels from all over the place and they go on easy with no special gunsmithing needed, so you can swap between different barrels, such as a 1:12 if you want to shoot fast / light close range, then 1:10 for mid range stuff, then 1:9 for the monolithic solids, or 1:8 for really heavy or subsonic stuff. Also if you ever succumb to the 6.5CM itch, it's just a 30 min barrel change away.