The Plus is an interesting mix of pluses and minuses. On the downside is so-so IPsec tunnel performance, no IPsec setup logging, and lack of inbound port range forwarding. But the positives include decent routing performance, schedulable port filters, the ability to act as both a PPTP endpoint in both client and server modes (with decent throughput), and a street price under $100.
Which leaves prospective buyers with both port range forwarding and PPTP tunneling needs with a quandry.
My advice is to think of the Plus as a PPTP endpoint router that needs a firmware update to add the missing port range forwarding. Buyers in search of an inexpensive IPsec endpoint router should either keep their fingers crossed that the same firmware update will fix the IPsec negatives, or just move on to other choices.