Do I choose to receive the sacrament of the Eucharist within the community of believers or through an act of spiritual communion?

From a Catholic perspective, receiving the Eucharist sacramentally within the community of believers is the primary goal, but spiritual communion is a valid and grace-filled option when sacramental communion is not possible. A person should not choose to receive spiritual communion over the Eucharist if they are able to attend Mass and are properly disposed to receive the sacrament. 

https://www.catholicfaithonthemove.com/catholic-faith-on-the-move

The two forms of communion are not considered interchangeable, but each has its proper time and purpose. 

Sacramental communion

Sacramental communion, also called Holy Communion, involves receiving the physical body, blood, soul, and divinity of Christ during Mass. 

• The norm for Catholics: This is the ordinary way to receive Jesus and is an integral part of the Eucharistic liturgy, which makes present Christ's one sacrifice.

• A requirement, not a choice: The Church requires Catholics to attend Mass on Sundays and Holy Days of Obligation, provided there is no serious impediment. To receive the Eucharist, you must be in a state of grace (not conscious of any unconfessed mortal sin) and have fasted for at least one hour. 

Spiritual communion

Spiritual communion is a prayer expressing a desire for union with Christ when sacramental communion is not possible. It has long been a practice in the Church, with many saints endorsing it. 

• When to make a spiritual communion: This practice is meant for circumstances that prevent sacramental communion.

• Inability to attend Mass: This is the most common reason, such as due to illness, bad weather, or travel.

• Ineligibility to receive: A person who is not Catholic or is aware of a mortal sin should refrain from sacramental communion, but can make a spiritual one.

• Even while at Mass: You can offer a prayer of spiritual communion even while physically present at Mass if you are not receiving the host. 

https://catholicmissourianonline.com/stories/if-you-cant-receive-communion-make-a-spiritual-communion,2448

When to choose

Your situation determines the appropriate form of communion.

If you...	You should...	Because...
Are able to attend Mass and are properly disposed to receive.	Receive sacramental communion.	This is the fullest way to participate in the Eucharist and fulfills your Sunday obligation.
Are unable to attend Mass for a legitimate reason (e.g., sickness).	Make a spiritual communion.	This allows you to receive grace and express your desire for union with Christ from a distance.
Attend Mass but are not properly disposed (e.g., in a state of mortal sin).	Attend Mass and refrain from sacramental communion. Make a spiritual communion as a sign of your desire for union with Christ and the grace to seek reconciliation in Confession.	This avoids the grave sin of sacrilege.
Are a non-Catholic believer attending Mass.	Refrain from sacramental communion. Make a spiritual communion.	Non-Catholics are not ordinarily permitted to receive the Eucharist in the Catholic Church, but they can still receive grace from a prayer of spiritual communion.