Happy with my Nomad, but if in your shoes now, purely on specs alone...
...the JX 6.0 is rated up to 40 lb mono with 20 lb max drag,
...the Saltiga's rated max is
30-65 Braid (translation: 15-30 mono) so the Saltiga is a no-go,
...the Phenix RTX-C 700MH-3 is rated 20-50 mono, so 40 lb on the JX is in the mid-range.
With the Okuma Nomad's unavailalble, the only other commercially available travel rod with 40 lb in the mid-range is the Tsunami TSTBC703H:
www.tackledirect.com
This one is a bit more of a gamble since it's not sold in the U.S.:
Find many great new & used options and get the best deals for New PENN Rampage II Mk2 Travel Boat Fishing Rod 7'4' 4 Section 30-50lb Class at the best online prices at eBay! Free shipping for many products!
www.ebay.com
Here is another travel rod post (my reply is the 9th one down):
Working on putting together a go bag of essentials for panga fishing in the Cortez. I have been thinking about picking up a couple travel rods to supplement the limited amount of gear that's supplied by the boat. Would like a spinner and a...
www.bdoutdoors.com
YMMV.
Good luck with what you decide.