I have one Grand. A couple RM2's about 5 different bottles. I change flavors every couple days or so. I have about 5 different flavors I rotate, but there's one that I use probably 75% of the time.
I would love a couple more REO's, but it's just not in the budget. Fortunately the Grand is a tank, It's getting it's fair share of dings and nicks, but it keeps vaping like a champ. I do regular maintenance and cleaning and really have no worries. I do have a couple "lesser" mods sitting around, but they have gone untouched since I got the Reo. I do actually use a VAMO, to check resistance on my coils(which recently are all too low to fire on the Vamo).
I don't have any problems changing flavors when the mood strikes. It's a 5 minute process and could actually be quicker, but I'm a bit meticulous about it.
I've also gotten lazy. My last RM2 build was a dual coil that I used for well over a month. I changed it out a couple nights ago just to stay in practice.
I only wish I would have gotten the REO earlier. The amount of time and money I spent searching for "the perfect vape" could have afforded me several Reos considering all the stuff I'd bought up to that point. I can now finally say that I am saving money.
Personally, I would rather use any Reo, regardless of it's paintjob over anything else I've tried. If the color scheme bothered me that much, I'd paint it myself. I've yet to see a Reo that I wouldn't happily own, but that's just me.