Well I finished my taxes this year and they are finally accepted. Every year, we look at the market and the issues and decide on what provider to use. So here is a summary of our experience. Happy to hear your experiences too.
Over the years I have used TaxCut/H&R Block, TaxAct, FreeTaxUSA, and now this year OLT. They all have done the job, but they have all had issues too. I left the PC version of TaxCut/H&R Block (often considered the #2 software out there) in 2003 primarily because I wanted to move to the Web and use Linux. It was also a huge cost savings at the time. My last H&R Block return was $61.30, and TaxAct was $17.90 in 2003. We used TaxAct (maybe the #4 tax provider, and #3 provider in the high-end market) for many years, but their price hikes over the years were way beyond simple inflation and sanity. By 2020, our last return cost $134.90. They also had issues with calculating underpayment penalties so we sometimes payed penalties when we did not have to. If they had just followed inflation that $17.90 in today's dollars would be $30.16. So I strongly believe that paying more then $30 regardless of how complex your taxes are is a rippoff. So in 2021 we moved to FreeTaxUSA (FTU) which was $21.98. As far as I know they are the #3 tax provider and the #1 value player. We actually like them quite a lot. The main issue we found was their treatment of MN Exempt income from mutual funds is a bit suspect though it can be worked around. The other issue we had was particular to this year. Turns out that we needed K1 support with certain boxes and codes, and the state part of that which for us is MN KF. FTU just could not do it. So we tried OLT. The cost of OLT was $15.90. What I really appreciate about OLT is support of a wider range of filing situations for a price under $30.00. Also like their lack of games including no price tiers based on your return, and being able to see your whole return before paying. What I am less sure of is thier MN state returns. My experience is that you may have to know what your doing and know to manually enter certain things, and manually override others for MN State returns. I had no particular issues with Federal though. So it seems like OLT is good for more complex returns for people that know what they are doing. Overall I liked OLT because of many added capabilities and I do hopefully know what I am doing.
I'll close with the list of tax providers I personally considered in the order of decreasing market share based on relative web traffic: TurboTax (60%), H&R Block (23%), FreeTaxUSA(7.4%), TaxAct (6.4%), TaxSlayer (2.3%), OLT (0.59%), 1040 dot com (0.48%). I did not seriously consider CashApp Taxes, FileYourTaxes, 1040Now, eFile Express, IRS Free Fillable Forms, or Sprintax for various reasons. I also did not consider TaxHawk or Express1040 or consider them in my web traffic estimates as they are from the same company as FreeTaxUSA which is more well known. I wanted a provider with fairly good support, that had some popularity, had a reasonable reputation, could file taxes of reasonable complexity, was focused on US residents, is web based and can use with Linux and Firefox, and could file my state return. I also wanted a provider for under $30 which left only FreeTaxUSA, OLT, and 1040 dot com on the list.
Anyway, hope someone finds this somewhat interesting or useful. Best to you all.