I like them and a lot of Egnater Previous stuff
I think getting the builders involved is awesome ,so you have a circuit designed by Mike Soldano , Peter Deizel etc .
The Issues to me are
1) what you use for a power amp is going to impact the overall authenticity of the module
2) When i owned my MTS rig it was easily the noisiest amp i had ever used ,so the noise floor is a concern
3) Price point they are not cheap , get a 50 watt head loaded with say 2 freedman modules and your at $3000 ,probably more than an actual used BE ,Deizel etc