The cheaper controllers have limited monitoring functions a better one will sense the level of chrege and not try to deliver more than the battery needs. The choice is between PWM and MPPT. Do some research before you spend money. Cheaper is usually not best in Solar. That said, if you get the set you have in mind you can certainly add the better controller late if u need/ want to .

The Renogy Solar Suitcase is quite popular and was on my short list, but didn't make the cut for my first purchase for reasons which  I explained elsewhere in this forum.  It is still in the running for a future addition.

Some of the benefits are portability, ease of set up, brand quality of the panel and ability to move it a short distance to get it into good sunlight. On the negative side, you have to set it up every time you use it. The wiring is marginal so you will get a little less power from it than you would if it had heavier wire.  The controller is not water proof. And of course while it has legs, it can also can grow extra legs and walk off if not chained to a tree or the like.

If you are just looking to top off the battery on occasion instead of getting closer to solar independence, or perhaps, in addition, using it to charge other batteries at home, etc, then it should be fine.

If, on the other hand, you really want to be able to come off the electric grid for more than a day or two, then I have a suggestion... The key to designing a good solar system (which includes panels, controller and house batteries) is to figure out how much power you use.  So IMHO the first step for anyone who will be more than just a casual user of solar electric is to get a meter that will track you power usage.  Again, my prior post goes into more detail.

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