I own both HICV and Wyndham.
I own a lot more Wyndham than HICV. I didn't really buy HICV, I sort of fell into it. I bought a resale in Vegas 15+ years ago, when Vegas did NOT have a lot of units, and it was more demand than supply. That has dramatically changed over the last decade. However I was fortunate enough to purchase a resale $300 unit that eventually became purchased by HICV, and they offered us to join HICV for $100 fee. So I got into HICV by accident, for $400.
Since they have purchased Silverleaf, and I live in TX, so I use almost all of my HICV points for stays in TX, either at the Silverleaf properties, or at the Escapes in Galveston that they purchased and converted.
I also like the Global Choice option that HICV has, for a $75 fee I can convert NON-RCI Points weeks into HICV points ( i have two of these and have enough TPUs already). So this way I can take other ownerships I have, and use it on something other than TPUs. So it is like getting HICV points without having to purchase another property. So I have used it for the first time this year.
I am typing this from the HICV Galveston Beach Club, I picked up a 2 day stay over July 4th, but it may be a wash as it has been raining since last night.
I own a Wyndham VIP Platinum account, which I get much better use of with all the discounts and free upgrades I manage to obtain from my VIP status. With Wyndham VIP Platinum at 60 days prior to check In I get units at 50% off and Free upgrades to larger size units if available. Now I get these perks via a convoluted path to VIP that is NO longer allowed, but I got it written into my contract, and that has been tested and proven to hold up at Wyndham. I wouldn't recommend anyone buy from Wyndham to get these perks, but I have them and for far less than they can be obtained retail. So if I got them I will use them. But trying not to include VIP perks, lets look at what it costs from HICV vs Wyndham, at least my experiences.
In general, I find that HICV is slightly more expensive and I get slightly less for my usage than wyndham.
RESERVATION FEES: I get better value for my exchanges through Wyndham. Perhaps it is because I get less perks with HICV but I also finds that the fees are higher. Reservations for Wyndham are $19 but I get unlimited free transactions with my VIP so that is $0 for me. However HICV reservations are $64. Even without VIP $64 vs 19 is a big difference.
CANCELLATION POLICY: Wyndham allows you to cancel and get a full refund if you cancel 15 days prior to checkin. HICV policy is 90 days out you can cancel with a full refund. HICV policy is 90+ days 100% refund, 89-61 75%, 60 - 31 50% refund, 30 or less 0% refund. So 90 vs 15 days to get a 100% refund on cancellation.
INSURANCE: With HICV, you can buy insurance on your reservation to save your points if you have to cancel beyond the cancellation policy period. HICV charges $35. Wyndham just introduced this as well, it is $49. So between insurance and reservation fees you can pay $99 with HICV and only $68 for Wyndham. So Wyndham provides better cancellation policy without insurance and if you feel you have to get insurance it is still cheaper at Wyndham.
MF $$: I can't say that this is an average or best comparison, but it is my comparison. My MF on my HICV are about 40% higher per Point than my Wyndham. In this $$ I also add all my program fees and other annual charges. Because I have more Wyndham points, these fees gets distributed over more points, thus reducing their impact.
GUEST CERTIFICATE FEES: You get 15 with HICV. After that it is $199 per. You get 2 with Wyndham if you buy resale ( I think), they are $129 after that. I get 30 Free with Wyndham, so for me this is a draw. For resale others may find HICV has the edge.
LOCATIONS: Wyndham has way more locations than HICV. HICV 26, and Wyndham (not including Club pass) 130.
POINTS REQUIRED: I think most of the discussion above has been about the amount of points needed to book a stay, as since I think enough has been said about that I will bow out.