If I'm reading you right, you've lost a bit of confidence in Linksys/Cisco. Fair enough, you're not the first and you won't be the last.
But there are only so many credible low-cost VPN options - Netgear isn't one as far as I'm concerned.
If it was my neck on the line, I'd probably pass on the D-Link unless the wider availability is a deal-maker for you. To put it another way, I'd be heat-soaking and benchmarking it before deployment.
I don't know what mail-order is like for you, in the backwater we call Oz it's usually overnight unless the package is too big for airfreight. At the risk of sounding like an evangelist, I'd have to suggest you buy a DrayTek and see if it meets your requirements. They're far from perfect and too expensive in many countries, but I like them because for me they've been extremely reliable, including operating uptime.
Vigor 2110 would be my first choice (you can buy from that link). Expensive at $140 and limited to 2 VPN tunnels (with Dead Peer Detection), but probably about right for your application. Looks like it might even support WAN failover, although you'd want to check that.