Mr ZorgSome interesting info on the Renaissance wax.
"Earlier wax polishes based on beeswax and carnauba wax either contained acids or became acidic over time. Renaissance Wax is based on more stable microcrystalline waxes refined from crude oil.
Renaissance Wax contains polyethylene waxes. Some other microcrystalline waxes intended for conservation use do not contain these."
It's likely most of this wax is derived from lubricant production using a traditional dewaxing process to improve the cold flow properties. Newer catalytic dewaxing processes rearrange these molecules to ones with better cold flow properties which increases lubricant volume yield.
Renaissance Wax contains polyethylene waxes. Some other microcrystalline waxes intended for conservation use do not contain these.
Linspeed is a bit more expensive than tru oil but it all depends on the finish you want. A warm old world oil finish or a glossy finish. The choice is yours and I'm sure you will get a good result no matter what way you go. If you use tru oil you won't be able to use Linspeed later on as tru oil requires the use of a filler before applying it.
When you get a tru oil stock finishing kit that you need to do the job properly it works out to be the same price or dearer than Linspeed..
Cheers mate Bob