Happy New Year
Boars (boys) do get a bit of a bad reputation by some - I agree with JerryBelly, everyone has different opinions. I have two pairs of boars and too, have never had any sows (girls). We tried unsuccessfully to bond them, and have them separate. Whilst there is dominance that can sometimes verge on the aggressive side, generally speaking they get on fine - there is no blood shed and no real problems. However, as they are about to enter their particularly strong hormonal phase we know that this may change. They do need a bit of monitoring - I am long term sick which means I am ironically fortunate enough to be able to look after them and constantly keep an eye on.
The advice I would give you would be to look at rescue centres local to you. As you are aware, guinea pigs should really be paired as they enjoy the company of a cagemate. Obviously there are a few exceptions to this in particularly aggressive or poorly pigs, but for the main part you should be looking to adopt two. The benefit of rescuing a pair of piggies from a reputable rescue is that they will have ensured that the pigs they pass to you will have been properly introduced and bonded. If you were to get your pigs from somewhere like Pets at Home or other pet shops, there is no measure in place to say that the piggies you have picked have bonded - in most cases (which I have learnt the hard way) they are more or less lumped in a small cage with other members of their sex (and in quite a few cases, mis-sexed and sold as boars when they are in fact pregnant sows) and either haven't bonded, handled much and are not paired for their characteristics/personalities but just on how they look. A good rescue will have made sure the pigs you get have been handled and had a lot of love.
Sometimes an older piggie will get on better with a young pig, rather than having two of the same age - again, if you were to get a pig from a pet store, the majority of the time they are babies so will be similar age.
Whichever sex you decide, make sure that you have adequate cage space with two of everything - two bottles, dishes and hideys.