Almost all manufacturers make locksets in numerous styles and finishes. Most styles can be ordered in whatever finish you desire. You'll find a myriad of choices if you simply do a google search for "door hardware", "locksets", or "door knobs". If you see a lockset that you like at a local retailer, chances are the retailer can order it for you in any of a number of finishes. Modestly priced door hardware is available from Kwikset, Schlage (perhaps the most dominant brand) and others. Mid-range priced sets are available from Emtek, Baldwin and others. Higher end architectural grade locksets are available from Omnia, Rocky Mountain Hardware and others. The very best entry sets are usually mortise locks, but it sounds like your door is set up for a deadbolt and knob or lever set. If you choose a set with two locks, you'll find it more convenient if you specify that both locks should be keyed the same.

I hadn't thought that the front door has to exactly match the garage doors. The shutters are white plank. The garage doors have square multiple panels, with horizontal planks above them as headers. The front porch has a plank ceiling. There is some sort of paneling painted white on some walls in the house. And I'm doing the new kitchen backsplash in white beadboard planking. (It's not as much planking as it sounds; it's subtle, but there's a continuity in a little planking here and there throughout the house.) So planking on the front door seems natural. In the fiberglass door I've selected (therma tru), the white plank door in Classic Craft Canvas comes only with a subtle arch at the top. It's not a full round top on the planking; it's an arch. So I don't have a choice, really, in that. And I think the planking blends well enough for continuity, since the garage doors are traditional and not unusual (like, say, Craftsman style). Another poster did suggest painting the garage doors to blend with the house, to point attention to the porch and entry way, which I think I might do. If a potential buyer insists on everything matching, they probably wouldn't be interested in my house or my subdivision, anyway. This is an old "within the loop" city neighborhood, with some eclectic homes and a spattering of McMansions. The only ones that have matching this and that are the McMansions, which are new, and some of the homes that were "flipped." It's an interesting neighborhood, though, in that the homes were built at different times and were originally custom, so some look the same, but some are very different...but all are old styles from the early 50s (mine) to the early 60s. I didn't know there were so many things to think about when fixing a house up to sell it! Lots to think about. Such good advice here in this forum. I had never thought about the garage doors.

I replaced my old doors with a double in my last house partly because moving things in and out required taking the screen door and doors off the hinges several times which is a giant PITA. You do need to buy quality insulated doors with really good weatherstripping and make sure they are installed by pros. Even full light ones like you prefer can be double paned with low e gas and insulated blinds in between the glass I think. Thermal curtains could be used when needed for privacy and insulation. The style and color of the doors is more important than the number in terms of it looking good with the house in my opinion, but I am NOT a designer or architect, so take that as just my 2 cents.

I can't believe I'd say this, but stylewise I don't think your existing doors are quite perfect. One is fine, but it doesn't work as well as a double door. I think the doors you are thinking of would be a fabulous upgrade appearance-wise. You could do a sidelight but I think the double door works nicely, and you'd get plenty of extra light with the new style. If you keep the doors, which are certainly nice enough, consider a brighter color. The black is elegant but if you think it feels too dark, an easy, traditional choice would be red. (The particular shade might not be so easy!) I guess paint color goes for new or repainting, but the new ones won't be as dark due to all the glass so I'd keep them black. I think the fake wood doors look pretty bad when "stained". If your climate doesn't allow for actual wood, don't stain it please! Before painting, be sure to get LARGE samples painted on posterboard or something to see if it looks right.