First off I'll say this, I work on my own cars, not as much as I use to due to advance electronics which I'm too old to care about learning, and my own bikes, as well house repairs. I do not and have never bought a tool set, I only buy tools as the need arises this way I don't have a bunch of tools that I'll never use or have a bunch of the same tools that I also don't need more than one of. I also can use a lot of my tools for bikes that I used on cars so no sense of buying bike specific tools in a lot of cases. Also I weigh the cost of professionally fixing a rare break down of a part that I never ever serviced before vs the cost of the tool to do a job that I may only do once. For example, I had a Cadillac once that had a short heater hose that came out of the back of the engine into another part of the back of the engine and I couldn't reach it with any tool that I had to replace it due to the close proximity of the firewall, so I called around and found out that SnapOn Tools had a specialty tool made to do just that one job for $220, but I also found out that I could have it professionally repaired for just $75, since I wasn't planning on keeping the car the rest of my life I took it in to have it fixed.
So I'm not a big fan on buying tool sets, like I said I only buy tools as I need them and as the situation might demand it. What's really weird is, I do own enough tools to do most things on a bicycle, but since break downs for me are quite rare because I keep on my maintenance like a village nut job, the one tool that I reach for now more than all my tools I have for cycling is the Park MTB 3.2 mini tool! I have one in each of my saddle bags (some have the older 3 model), and it's handy on the bike I don't have to go to the tool chest and get a tool, just open my bag pull out the mini tool and select the tool I want, that darn thing does almost everything I encounter, even other peoples bikes that broke down on the road, I've even used it once to fix a person's broken down car! So I suggest to a first time tool buyer that isn't real heavy into mechanical repairs is to simply buy a mini tool and keep in your saddle bag and you can use it when on the road or at home.
The MTB 3.2 has the most amount of tools of any mini tool on the market, it has stuff for road and MTB's, though the tire levers are a bit wide for road tires, so I carry in my saddle bag a set of Soma Steel Core levers which are unbreakable, I also carry a small cheap pair of folding pliers, and a Presta to Schrader adapter. There are a couple of other tire tools on the market that work quite well, one is the Quik Stik but you have to get the tire started first with levers then slide the Quik Stik in and just rip the bead off the rim real fast, it can also be used in reverse to put a tire on but the width prevents it from putting on a tight fitting tire in that last difficult section; the other one is the Var tire lever model RP-42500-C, this little gem is perfect for getting the last section of a very tight tire onto the rim without worrying about pinching the tube.