Sorry if this has been covered but couldn't find a comparison in my search.
I don't build a lot of armor but I saw a build up of the IBG Scammell Pioneer on "the Modeling News" that looked great. Searching for that on eBay and Lucky Model showed me the kit of the same vehicle produced by Thunder Models.
I know they are different kits, so my question is, what's the consensus on which is the better kit? My emphasis would be on the best ease of assembly vs. accuracy, I guess, I don't want to spend forever doing tiny intricate things, I just want to get this beast to the painting and weathering stage, my favorite things.
Thanks in advance for any input.

If it is buildability over accuracy, your best bet is to check out reviews showing instructions and parts breakdown such as
Thunder
https://www.youtube.com/watch?v=0CmXlzkzSTM

IBG
https://www.themodellingnews.com/2017/06/in-boxed-andy-gets-to-examining-35th.html
https://www.web.ipmsusa3.org/content/scammell-pioneer-sv2s-heavy-breakdown-tractor

And weigh your own options. I know people that have built one of each and both were happy with the kits.

It could also depend upon wich version you want to do.
Thunder Models has a Recovery version, a Heavy Artilery Tow version and a Tank Transporter both with and without the Trailer. There's also a Goose neck trailer available separtly.

Donald

THUNDER MODELS.
Don't bother with the IBG model !!

I believe the IBG one has the windscreen of a Scammell Retreiver (with slanted outside frames) whereas the windscreen of the Pioneer is straight at the outside edges, i.e. the width of the windscreen at the top is greater than it is at the bottom. If that is correct I suspect that the roof of the IBG kit would be slightly wider at the front than it should be. Maybe others can confirm this. I built the Thunder Models Tank transporter and it went together pretty well.