It is helpful to look at which groups your theology is favored by. For instance, if I found that my view of the atonement was consistent with that of the Quakers, I would become concerned. If I found that view of the authority of scripture lined up with Rome's or the OC, I would again worry about where I stood. If scripture has convinced me that a group has another gospel, then I would be wise to understand why all of its doctrines would be tainted in some way because of it.
The Reformers got it right in the 5 Solas.
Yes, they got the "Five Solas" correct.
BUT, they departed the Scriptures when it came to teaching of the atonement.
Today, most "reformed" wrap the blood and salvation together. They desire to limit the atonement by establishing that there is a limit of blood, saying such things as, the blood was shed only for the elect.
That is un-scriptural teaching.
Scriptures teach that the limit is NOT on the blood supply, but the gift of God - belief, faith.
"Particular" Baptists, who saw the wisdom of the blood for all but also didn't want to offend the reformed thinking, compromised by teaching that the blood was efficient (plenty) for all, but only effective (applied for salvation) for some. (my opinion as to the desire to be unoffensive)
Others were not content with just the blood shed for all, but changed salvation to "whoever" could generate enough (from their own free will) innate personal "faith" to be able to reach out and "accept" the free offer of salvation. Endorsing such un-Scriptural statements such as "everyone has an empty God image that only Christ can fill", and "people are naturally seeking to fill a void, and therefore seeking God," has brought all manner of untruth disguised in evangelistic efforts. The results being seen clearly in this day.
Because it is man generated faith, then God was no longer keeping the believer saved, but all manner of mental and emotional gymnastics that were required to "feel" as one truly saved, and "feel" as one has worshiped, and "feel" as if the Holy Spirit is leading, and "feel" as if they are being taught the Scriptures. Putting "feeling" above the truth - having to be saved again and again because perhaps not being serious enough or some distraction prevented salvation, and even proclaiming that one who strayed from the "camp" wasn't really a part of the camp in the beginning.
All because the reformers decided to pretend the five solas were enough.