Fork wise it’s slim pickings at the minute for non tapered forks. Most have been sold and now there are only a few made which they charge alot for. Havn’t seen any cheap Reba’s or SID’s for a while.
CRC have 100mm, black, straight steerer, 29er, 9mm axle, motion control damper air fork, Rock Shox Recon’s for £200. Same as Reba possiby but with cheaper heavier steel uppers compared to alloy on the reba’s (otherwisde I think its a Reba). Coil version is cheaper still.
http://www.chainreactioncycles.com/rockshox-recon-silver-rl-solo-air-forks-9mmqr-2018/rp-prod160844?gs=1&pgrid=39252759720)&ptaid=aud-111606983596:pla-187101508156&utm_source=google&utm_term=&utm_campaign=Chain+Reaction-UK-PLA-PLA-All-DT-SE-Shopping+QLB+Product+Desktop&utm_medium=base&utm_content=mkwid|sGIO0sbVU_dc|pcrid|161846717734|pkw||pmt||prd|592409UK
Besides a fork you could buy a Thudbuster. That with the flex of a titanium railed B17, it’s like riding an armchair! 2.4’s on wide rims also.